[TechAssist] Re: Philips TS2744C103 chassis 27B8 Micro-p problem.
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 27 Mar 2003 20:00:43 -0500
There is no R468 in this set. I cannot cross the 313501001321 to any number.
You may have a defective or incorrect EEPROM which you stated in your
original post that you have replaced so we need to know what part number you
replaced it with. Usually if you do have a defective EEPROM, you should be
able to remove it and see if the problem goes away as a test. Having said
that, it's time to go back to basics so let's verify we have the plus and
minus 13 volts to the vertical. If so, replace the vertical IC with the
original part# 483520988531 ONLY!!! If you are missing one or both of the +
or - 13 volts, check D409, D445, R420, and R445. Then let's see where we
stand. The 483520988525 which should be the proper micro for this set is NLA
with no sub listed.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "LeRoy Westlund" <llw@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, March 27, 2003 4:00 PM
Subject: [TechAssist] Re: Philips TS2744C103 chassis 27B8 Micro-p problem.
>
> That's funny. I don't see an R468 in this set. It's not listed on the
parts
> list, either.
>
> LLW
>
> LeRoy Westlund
> Westlund TV & Electronics " Walk tall,...Walk straight
> 93 North Main and look the world
> Centerfield, UT 84622-0087 right in the eye "
> Ph./Fax 435-528-3822
> mailto:LLW@xxxxxxxxxx
>
> -----Original Message-----
> From: Tel-Tek Electronics <teltek3@xxxxxxxxxxxx>
> To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
> Date: Thursday, March 27, 2003 1:26 PM
> Subject: [TechAssist] Re: Philips TS2744C103 chassis 27B8 Micro-p problem.
>
>
> >
> >Also have a note here No Video..No OSD...Open R468 1ohm/12watt.
> >
> >-Ed-
> >----- Original Message -----
> >From: "LeRoy Westlund" <llw@xxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Thursday, March 27, 2003 2:19 PM
> >Subject: [TechAssist] Re: Philips TS2744C103 chassis 27B8 Micro-p
problem.
> >
> >
> >>
> >> OK, Bob,
> >> You got me back to square one.
> >> I have had this set here for so long, that I forgot that I had replaced
> >the
> >> micro-p with one from a used chassis, that had 52 pins, instead of 42
> >pins.
> >> I put the original 42 pin IC345 (313501001321) back in, and now the
set
> >> turns on again.
> >> Now I'm back to my original problem, of NO video, and NO OSD. If I turn
> up
> >> the screen, I get retrace lines, so I know I don't have a vertical
> >deflected
> >> beam problem.
> >> I also, have replaced IC271, and rebuilt the CRT board, and replaced
the
> >> Eprom.(which is socketed). Works the same, with or without the Eprom
> >> installed.
> >> Do you think it is a good idea to order the correct Miicro-p ?
> >> The number on the original IC345 is 313501001321. Is that the new
number
> >for
> >> 483520988525 ?
> >>
> >> Regards,
> >> LLW
> >>
> >> LeRoy Westlund
> >> Westlund TV & Electronics " Walk tall,...Walk straight
> >> 93 North Main and look the world
> >> Centerfield, UT 84622-0087 right in the eye "
> >> Ph./Fax 435-528-3822
> >> mailto:LLW@xxxxxxxxxx
> >>
> >> -----Original Message-----
> >> From: Gemini Computer & TV <geminitv@xxxxxxxxxxxxxxxx>
> >> To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
> >> Date: Thursday, March 27, 2003 7:53 AM
> >> Subject: [TechAssist] Re: Philips TS2744C103 chassis 27B8 Micro-p
> problem.
> >>
> >>
> >> >
> >> >First of all you have a non-commercial model (90 day labor warranty).
> >> >Usually a commercial model will have a model number that begins with
> "PC"
> >> or
> >> >"PL" such as a PC7225C which is also a B7/B8 chassis series and has a
1
> >> year
> >> >labor warranty. On that note, Force 32 lists the following 2 part
> numbers
> >> >for IC345 as follows:
> >> >
> >> >483520988523 (LC864132)(subs to 313501003611) for commercial models.
> >> >483520988525 (LC864725A-5F34) for non-commercial models. This part
shows
> >as
> >> >an inactive part number on the Philips Parts Store website with no sub
> >> >listed.
> >> >
> >> >Now the 613077-2 number (6130770002) subs to 483520988458 which subs
to
> >> >483520988384 and is an active part number.
> >> >
> >> >R321 is listed as a 510K, 1/10 watt resistor, part# 483511127053 for
> >> >non-commercial models and you are correct about 0 ohms for commercial
> >> >models.
> >> >
> >> >And finally the EEPROM (IC346) is listed as an ST24C04FB1, Philips
part
> >> >number 483520988527.
> >> >
> >> >Bob Waterman, CET® #RI-28
> >> >Master Technician License #9109
> >> >Service Manager
> >> >Gemini Computer, TV, & Security Alarms
> >> >(508)695-7302
> >> >(508)695-7769 FAX
> >> >geminitv@xxxxxxxxxxxxxxxx
> >> >geminitv@xxxxxxx
> >> >www.geminicomputertvsecurityalarms.com
> >> >
> >> >----- Original Message -----
> >> >From: "LeRoy Westlund" <llw@xxxxxxxxxx>
> >> >To: <techassist@xxxxxxxxxxxxx>
> >> >Sent: Wednesday, March 26, 2003 8:50 PM
> >> >Subject: [TechAssist] Re: Philips TS2744C103 chassis 27B8 Micro-p
> >problem.
> >> >
> >> >
> >> >>
> >> >> Bob, and All;
> >> >> I'm a little confused.Could you check out the part numbers for me ?
> >> >> IC345
> >> >> # on part is 613077-2 (52 pins).
> >> >> # I ordered from number on microfitche 483520988523
> >> >> # they sent me number 313501003611 (52 pins).
> >> >> (These were for Non-commericial models).
> >> >> Is that the right part number for my set ?
> >> >>
> >> >> Also, there is a SMD missing. It is R321. (For Non-commericial sets)
> it
> >> >says
> >> >> to use 510K part # 483511127056. ( 0 ohms for Commericial units).
> >> >> Am I right to assume this is a Non-commericial unit ? How can I tell
?
> >> >>
> >> >> LLW
> >> >>
> >> >> LeRoy Westlund
> >> >> Westlund TV & Electronics " Walk tall,...Walk straight
> >> >> 93 North Main and look the world
> >> >> Centerfield, UT 84622-0087 right in the eye "
> >> >> Ph./Fax 435-528-3822
> >> >> mailto:LLW@xxxxxxxxxx
> >> >>
> >> >> -----Original Message-----
> >> >> From: Gemini Computer & TV <geminitv@xxxxxxxxxxxxxxxx>
> >> >> To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
> >> >> Date: Wednesday, March 26, 2003 2:48 PM
> >> >> Subject: [TechAssist] Re: Philips TS2744C103 chassis 27B8 Micro-p
> >> problem.
> >> >>
> >> >>
> >> >> >
> >> >> >Well in that case, it is probably one of three things. Either you
> have
> >a
> >> >> new
> >> >> >defective micro, the wrong replacement micro, or it is not
installed
> >> >> >properly. Can you reinstall the original micro and see if it is
still
> >> >dead?
> >> >> >
> >> >> >Bob Waterman, CET® #RI-28
> >> >> >Master Technician License #9109
> >> >> >Service Manager
> >> >> >Gemini Computer, TV, & Security Alarms
> >> >> >(508)695-7302
> >> >> >(508)695-7769 FAX
> >> >> >geminitv@xxxxxxxxxxxxxxxx
> >> >> >geminitv@xxxxxxx
> >> >> >www.geminicomputertvsecurityalarms.com
> >> >> >
> >> >> >----- Original Message -----
> >> >> >From: "LeRoy Westlund" <llw@xxxxxxxxxx>
> >> >> >To: <techassist@xxxxxxxxxxxxx>
> >> >> >Sent: Wednesday, March 26, 2003 4:39 PM
> >> >> >Subject: [TechAssist] Re: Philips TS2744C103 chassis 27B8 Micro-p
> >> >problem.
> >> >> >
> >> >> >
> >> >> >>
> >> >> >> No, Bob. I have all these fixes, already.
> >> >> >> My set is "dead" at the present time, and you have to be able to
at
> >> >least
> >> >> >> turn it on, before performing some of these proceedures. It
turned
> >on
> >> >> >> "before" I changed the micro-p.
> >> >> >> I would give up on this one,...but, it has become a life long
dream
> >of
> >> >> >mine
> >> >> >> to fix it.
> >> >> >> The set belongs to me now, so it has become a matter of
principle,
> >> >> instead
> >> >> >> of profit.
> >> >> >>
> >> >> >> Regards,
> >> >> >> LLW
> >> >> >>
> >> >> >> LeRoy Westlund
> >> >> >> Westlund TV & Electronics " Walk tall,...Walk straight
> >> >> >> 93 North Main and look the
world
> >> >> >> Centerfield, UT 84622-0087 right in the eye "
> >> >> >> Ph./Fax 435-528-3822
> >> >> >> mailto:LLW@xxxxxxxxxx
> >> >> >>
> >> >> >> -----Original Message-----
> >> >> >> From: Gemini Computer & TV <geminitv@xxxxxxxxxxxxxxxx>
> >> >> >> To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
> >> >> >> Date: Wednesday, March 26, 2003 2:09 PM
> >> >> >> Subject: [TechAssist] Re: Philips TS2744C103 chassis 27B8 Micro-p
> >> >> problem.
> >> >> >>
> >> >> >>
> >> >> >> >
> >> >> >> >Perhaps this may have been it:
> >> >> >> >
> >> >> >> >Symptom: High Voltage (EHT) remains but there is no:
> >> >> >> >OSD - Menu
> >> >> >> >Video - Raster
> >> >> >> >Sound
> >> >> >> >There may be a faint line across the top of the CRT.
> >> >> >> >Cause: Information in the EEPROM (IC346) is incorrect. This
> >results
> >> >in
> >> >> >> >deadlock of the BIMOS Signal Processor. Caused in one instance
> >when
> >> >> >> >Register 66 on Service Page A was adjusted to FF and stored.
> >> >> >> >Cure: If in the Service Mode exit by pressing 9, then + (volume
> >up).
> >> >> >The
> >> >> >> >set will shut off. Power on and enter the Service Mode by
> >> >> 06-25-95-MENU.
> >> >> >> >Press A/CH (Surf). ROM defaults will be written to the EEPROM
and
> >> >> normal
> >> >> >> >operation will come back.
> >> >> >> >Note: At this point all items in the Service Mode will have to
> >> >adjusted
> >> >> >> for
> >> >> >> >proper operation.
> >> >> >> >----------------------------------
> >> >> >> >Symptom: There may be no raster, no video (slick raster) or only
> >the
> >> >top
> >> >> >> >half of the raster.
> >> >> >> >
> >> >> >> >Cause: Corrupted value in EEPROM memory, IC346, register 67
> >> >> >> >
> >> >> >> >Cure: TO AVOID CHANGING ALL MEMORY LOCATIONS:
> >> >> >> >
> >> >> >> >1. With set unplugged from AC ground pin 6 of memory IC (IC346).
> >> >> >> >
> >> >> >> >2. Power set and turn on. Video and/or raster should be
restored.
> >> >> >> >
> >> >> >> >3. Enter Service Mode, first page.
> >> >> >> >
> >> >> >> >4. With cursor up/down select register 67.
> >> >> >> >
> >> >> >> >5. With right/left cursor set value to 1D.
> >> >> >> >
> >> >> >> >6. While on remove ground from pin 6 of IC346.
> >> >> >> >
> >> >> >> >7. Press MENU to save. Press 9, press cursor right, set will
turn
> >> off.
> >> >> >> >
> >> >> >> >8. Break AC power for 10 seconds to insure value is saved.
> >> >> >> >
> >> >> >> >9. Restore AC power and check operation.
> >> >> >> >
> >> >> >> >If full video is restored in step 2 but readjustment of register
> 67
> >> >does
> >> >> >> not
> >> >> >> >resolve the problem do the following:
> >> >> >> >
> >> >> >> >A. Perform steps #1, #2 and #3 above.
> >> >> >> >
> >> >> >> >B. While in the Service Mode record all displayed values in
pages
> B
> >> >> >through
> >> >> >> >H.
> >> >> >> >
> >> >> >> >C. Return to page A (press 1) & press A/CH on remote to write
> >> defaults
> >> >> >from
> >> >> >> >the micro-P to the memory IC.
> >> >> >> >
> >> >> >> >D. Complete steps 7, 8 and 9 above.
> >> >> >> >
> >> >> >> >E. Turn on set, enter Service Mode and reset pages B through H
to
> >the
> >> >> >> >recorded values in Step B.
> >> >> >> >
> >> >> >> >----------------------------------------------------------------
> >> >> >> >
> >> >> >> >Bob Waterman, CET® #RI-28
> >> >> >> >Master Technician License #9109
> >> >> >> >Service Manager
> >> >> >> >Gemini Computer, TV, & Security Alarms
> >> >> >> >(508)695-7302
> >> >> >> >(508)695-7769 FAX
> >> >> >> >geminitv@xxxxxxxxxxxxxxxx
> >> >> >> >geminitv@xxxxxxx
> >> >> >> >www.geminicomputertvsecurityalarms.com
> >> >> >> >
> >> >> >> >----- Original Message -----
> >> >> >> >From: "LeRoy Westlund" <llw@xxxxxxxxxx>
> >> >> >> >To: "TechAssist" <techassist@xxxxxxxxxxxxx>
> >> >> >> >Sent: Wednesday, March 26, 2003 3:45 PM
> >> >> >> >Subject: [TechAssist] Philips TS2744C103 chassis 27B8 Micro-p
> >> problem.
> >> >> >> >
> >> >> >> >
> >> >> >> >>
> >> >> >> >> Hi,
> >> >> >> >> I have had multiple problems with this set. I repaired the
> >typical
> >> >> >> >vertical
> >> >> >> >> problem, plus the typical problems associated with the CRT
> board,
> >> >etc.
> >> >> >> >> I had everything working, except still NO video. I replaced
the
> >> >EPROM
> >> >> >> with
> >> >> >> >> no help, and as a last resort, I decided to change the
micro-p.
> >> >> >> >> My new problem: After replacing the micro-p, I can't get the
> set
> >> to
> >> >> >even
> >> >> >> >> turn on. I did a nice clean solder job, and checked my
> >> >> >> >> work,...but,....NOTHING.
> >> >> >> >> I remember seeing a post a while back, that had this same
> >symptom,
> >> >and
> >> >> >a
> >> >> >> >> fix,..but, I can't find it. I thought I had saved it.
> >> >> >> >> Can anyone help me with this problem ?
> >> >> >> >>
> >> >> >> >> Thanks for your time,
> >> >> >> >> LLW
> >> >> >> >>
> >> >> >> >> LeRoy Westlund
> >> >> >> >> Westlund TV & Electronics " Walk tall,...Walk straight
> >> >> >> >> 93 North Main and look the
> >world
> >> >> >> >> Centerfield, UT 84622-0087 right in the eye "
> >> >> >> >> Ph./Fax 435-528-3822
> >> >> >> >> mailto:LLW@xxxxxxxxxx
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >>
> >> >>
> >>
>
>>>>************************************************************************
> *
> >> *
> >> >> *
> >> >> >> *
> >> >> >> >*
> >> >> >> >> Submit A Repair Tip Here, or Change/Remove your Email Address:
> >> >> >> >> http://www.tech-assist.org/secure/tip/main.html
> >> >> >> >>
> >> >> >>
> >> >>
> >>
>
>>>>************************************************************************
> *
> >> *
> >> >> *
> >> >> >> *
> >> >> >> >*
> >> >> >> >> For automatic password retrieval 24 hours a day, go to:
> >> >> >> >> http://www.tech-assist.org and select "Lost your Login
Info?".
> >> >> >> >>
> >> >> >>
> >> >>
> >>
>
>>>>************************************************************************
> *
> >> *
> >> >> *
> >> >> >> *
> >> >> >> >*
> >> >> >> >> Access the archives here:
> >> >> >> >> //www.freelists.org/archives/techassist/
> >> >> >> >>
> >> >> >>
> >> >>
> >>
>
>>>>************************************************************************
> *
> >> *
> >> >> *
> >> >> >> *
> >> >> >> >*
> >> >> >> >>
> >> >> >> >
> >> >> >>
> >> >>
> >>
>
>>>>************************************************************************
> *
> >> *
> >> >> *
> >> >> >> **
> >> >> >> >Submit A Repair Tip Here, or Change/Remove your Email Address:
> >> >> >> > http://www.tech-assist.org/secure/tip/main.html
> >> >> >>
> >> >>
> >>
>
>>>>************************************************************************
> *
> >> *
> >> >> *
> >> >> >> **
> >> >> >> >For automatic password retrieval 24 hours a day, go to:
> >> >> >> >http://www.tech-assist.org and select "Lost your Login Info?".
> >> >> >>
> >> >>
> >>
>
>>>>************************************************************************
> *
> >> *
> >> >> *
> >> >> >> **
> >> >> >> >Access the archives here:
> >> >> >> >//www.freelists.org/archives/techassist/
> >> >> >>
> >> >>
> >>
>
>>>>************************************************************************
> *
> >> *
> >> >> *
> >> >> >> **
> >> >> >> >
> >> >> >>
> >> >> >>
> >> >>
> >>
>
>>>*************************************************************************
> *
> >> *
> >> >> *
> >> >> >*
> >> >> >> Submit A Repair Tip Here, or Change/Remove your Email Address:
> >> >> >> http://www.tech-assist.org/secure/tip/main.html
> >> >> >>
> >> >>
> >>
>
>>>*************************************************************************
> *
> >> *
> >> >> *
> >> >> >*
> >> >> >> For automatic password retrieval 24 hours a day, go to:
> >> >> >> http://www.tech-assist.org and select "Lost your Login Info?".
> >> >> >>
> >> >>
> >>
>
>>>*************************************************************************
> *
> >> *
> >> >> *
> >> >> >*
> >> >> >> Access the archives here:
> >> >> >> //www.freelists.org/archives/techassist/
> >> >> >>
> >> >>
> >>
>
>>>*************************************************************************
> *
> >> *
> >> >> *
> >> >> >*
> >> >> >>
> >> >> >
> >> >>
> >>
>
>>>*************************************************************************
> *
> >> *
> >> >> **
> >> >> >Submit A Repair Tip Here, or Change/Remove your Email Address:
> >> >> > http://www.tech-assist.org/secure/tip/main.html
> >> >>
> >>
>
>>>*************************************************************************
> *
> >> *
> >> >> **
> >> >> >For automatic password retrieval 24 hours a day, go to:
> >> >> >http://www.tech-assist.org and select "Lost your Login Info?".
> >> >>
> >>
>
>>>*************************************************************************
> *
> >> *
> >> >> **
> >> >> >Access the archives here:
> >> >> >//www.freelists.org/archives/techassist/
> >> >>
> >>
>
>>>*************************************************************************
> *
> >> *
> >> >> **
> >> >> >
> >> >>
> >> >>
> >>
>
>>**************************************************************************
> *
> >> *
> >> >*
> >> >> Submit A Repair Tip Here, or Change/Remove your Email Address:
> >> >> http://www.tech-assist.org/secure/tip/main.html
> >> >>
> >>
>
>>**************************************************************************
> *
> >> *
> >> >*
> >> >> For automatic password retrieval 24 hours a day, go to:
> >> >> http://www.tech-assist.org and select "Lost your Login Info?".
> >> >>
> >>
>
>>**************************************************************************
> *
> >> *
> >> >*
> >> >> Access the archives here:
> >> >> //www.freelists.org/archives/techassist/
> >> >>
> >>
>
>>**************************************************************************
> *
> >> *
> >> >*
> >> >>
> >> >
> >>
>
>>**************************************************************************
> *
> >> **
> >> >Submit A Repair Tip Here, or Change/Remove your Email Address:
> >> > http://www.tech-assist.org/secure/tip/main.html
> >>
>
>>**************************************************************************
> *
> >> **
> >> >For automatic password retrieval 24 hours a day, go to:
> >> >http://www.tech-assist.org and select "Lost your Login Info?".
> >>
>
>>**************************************************************************
> *
> >> **
> >> >Access the archives here:
> >> >//www.freelists.org/archives/techassist/
> >>
>
>>**************************************************************************
> *
> >> **
> >> >
> >>
> >>
>
>***************************************************************************
> *
> >*
> >> Submit A Repair Tip Here, or Change/Remove your Email Address:
> >> http://www.tech-assist.org/secure/tip/main.html
> >>
>
>***************************************************************************
> *
> >*
> >> For automatic password retrieval 24 hours a day, go to:
> >> http://www.tech-assist.org and select "Lost your Login Info?".
> >>
>
>***************************************************************************
> *
> >*
> >> Access the archives here:
> >> //www.freelists.org/archives/techassist/
> >>
>
>***************************************************************************
> *
> >*
> >>
> >
>
>***************************************************************************
> **
> >Submit A Repair Tip Here, or Change/Remove your Email Address:
> > http://www.tech-assist.org/secure/tip/main.html
>
>***************************************************************************
> **
> >For automatic password retrieval 24 hours a day, go to:
> >http://www.tech-assist.org and select "Lost your Login Info?".
>
>***************************************************************************
> **
> >Access the archives here:
> >//www.freelists.org/archives/techassist/
>
>***************************************************************************
> **
> >
>
>
****************************************************************************
*
> Submit A Repair Tip Here, or Change/Remove your Email Address:
> http://www.tech-assist.org/secure/tip/main.html
>
****************************************************************************
*
> For automatic password retrieval 24 hours a day, go to:
> http://www.tech-assist.org and select "Lost your Login Info?".
>
****************************************************************************
*
> Access the archives here:
> //www.freelists.org/archives/techassist/
>
****************************************************************************
*
>
*****************************************************************************
Submit A Repair Tip Here, or Change/Remove your Email Address:
http://www.tech-assist.org/secure/tip/main.html
*****************************************************************************
For automatic password retrieval 24 hours a day, go to:
http://www.tech-assist.org and select "Lost your Login Info?".
*****************************************************************************
Access the archives here:
//www.freelists.org/archives/techassist/
*****************************************************************************
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