[TechAssist] Re: Sanyo DS19204 no vert
- From: Jim Myers <jr.myers@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 10 Sep 2005 10:22:04 -0500
Installing the new chip is done with a standard soldering iron, just
position the new chip, tack down two corners to hold it in place then
apply solder to all the pins, make a good mess of it then wick it up.
You end up with a real clean neat job.
The Old Master Technician
********************************
Since 1972 *
Jim Myers *
Telrad Electronics *
Fort Wayne Indiana *
********************************
Tel-Tek Electronics wrote:
> Hey Al;
> I presume that the removal of the Chip may be fine with a Hot Air Gun.
> But would replacing the new one with that method not ruin the chip, before
> the solder took?
> Inquiring minds need to know.
>
> -Ed-
> Tel-Tek Electronics
> Ontario-Canada
>
> teltek3@xxxxxxxxxxxx
> ----- Original Message -----
> From: "AL LEATHERMAN" <alleathe@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, September 10, 2005 9:38 AM
> Subject: [TechAssist] Re: Sanyo DS19204 no vert
>
>
>
>>I assume you tried Chip Quick? A hot air gun works with practice and Chip
>>Quick. I have not mastered it, but I saw a young tech remove a huge
>
> chip,in
>
>>no time, and no damage. Chip Quik apparently applies solder at a low
>
> melting
>
>>point,which mixes with the solder on the board,and keeps it soft for
>>removal.Great sytuff.
>> Anybody know if Chip Quik words on leadless solder? Al L
>>
>>Al's TV
>>Mine Hill, NJ. 07803
>>972-361-5796
>>WWW.ALS-TV.NET
>>----- Original Message -----
>>From: "Electric Medic" <info@xxxxxxxxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Saturday, September 10, 2005 12:26 AM
>>Subject: [TechAssist] Re: Sanyo DS19204 no vert
>>
>>
>>
>>>John: I have to ask. How long did it take to remove install a 80 pin
>>>surface
>>>mount. Man that must have been time consuming. Did it remove and install
>>>and
>>>not pull up any runs? Also do you have a special machine to remove and
>>>install. All I have is my 60 watt Weller. I don't think I could handle
>>>that
>>>80 pin. I do the small ones. Looks like I am going to have to get a
>>>station
>>>to remove and install them soon with the different heads. Pace wants 2K
>>>for
>>>one. Many micros and now even jungles are that big now. Good topic to
>
> see
>
>>>how most of you handle these? Comments?
>>>
>>>Perry Bower
>>>Electric Medic
>>>"It's Cheaper to Keep Her"
>>>http://www.electricmedic.com
>>>Check out the Electronic Repair Screensaver We created. More Images to
>>>come!
>>>To download these Collections you must first install the Eyetide Viewer:
>>>
>
> http://www.eyetide.com/download/?s=O3OfmSLHXygGHCv1W6Gz3Bgjtq3DNNMNdcKsYSVGC
>
>>>"We're Number One Where it Really Counts, With our Customers"
>>>3850 Washington Road Suite 4C
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>>>Phone: 706-8MEDIC4 (863-3424)
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>>>
>>>-----Original Message-----
>>>From: techassist-bounce@xxxxxxxxxxxxx
>>>[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of John Mielke
>>>Sent: Friday, September 09, 2005 7:58 PM
>>>To: techassist@xxxxxxxxxxxxx
>>>Subject: [TechAssist] Re: Sanyo DS19204 no vert
>>>
>>>
>>>I just had a DS25204-01 (similar or same?) that had no vertical
>>>deflection.
>>>It turned out to be IC101 LA76843N, a 80 pin surface mount. Apparently
>>>this
>>>is a common problem, we had to wait about 2 - 3 months for the chip. I
>>>don't
>>>think it was expensive. Sorry, I do not have a schematic for either
>>>model.
>>>The vertical out on IC101 is on pin 26. The DS25204 is very similar to
>>>DS25320 in Sams 4801 except the DS25204 gets it's vetical B+ from the
>
> smps
>
>>>off D626 cathode and not from the fly. Let us know what you find,
>
> John.
>
>>>John Mielke
>>>Main TV
>>>636 Main St
>>>Longmont, Co 80501
>>>303 776 6955
>>>303 776 0792 fax
>>>www.longmontmaintv.com
>>>maintv2004@xxxxxxxxxxx
>>>----- Original Message -----
>>>From: <jhoeme@xxxxxxxxxxxxx>
>>>To: "Techassist" <techassist@xxxxxxxxxxxxx>
>>>Sent: Friday, September 09, 2005 4:22 PM
>>>Subject: [TechAssist] Sanyo DS19204 no vert
>>>
>>>
>>>
>>>>Output IC501 (LA78040N) has 24V on pins 2 and 6.
>>>>All associated components check ok.
>>>>I cannot see any input pulse or ramp on input pins 1 or 7.
>>>>I do not have a schematic.
>>>>Any history on this one?
>>>>TIA
>>>>Jerry Hoeme
>>>>Jerry's TV Service (Estb 1978)
>>>>840 So. Kansas Ave
>>>>Liberal, KS 67901
>>
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