[TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
- From: "Technotronic Dimensions" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 14 Mar 2004 14:02:05 -0500
Willie:
Yes, just now. They all read the Same DC wise, about 4.9V Or
so. The IC Itself seems unusually HOT though. Cooling it With Freeze didnt
change anything though. I cant see what the Main V. Reg IC is suppose to be
(ICX3431) - but here are the Voltages on it:
Pin 1) -117VDC
Pin 2) -75VDC
Pin 3) +75VDC
Pin 4) -75VDC
Pin 5) -110VDC (Makes Oscillation when Meter probe Touches it)
I have no idea what kind of STR this one is. Just about all the IC's on this
Chassis seem to be running hotter than usual - so I thought maybe their VCC
was higher (or lower) than usual Possibly from the STR?
Steve Hearns
Technotronic Dimensions, NY [USA]
WWW.TECHNOTRONIC-DIMENSIONS.COM
1-877-817-9885 (Voice / Fax Toll Free - US Only)
----- Original Message -----
From: "Willie Hunter" <williehunter2@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, March 14, 2004 1:13 PM
Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
Steve, did you check pins 18,19 and 20?
>From: "Technotronic Dimensions" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: <techassist@xxxxxxxxxxxxx>
>Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
>Date: Sun, 14 Mar 2004 12:24:10 -0500
>
>Hi Willie:
>
> Yes, I did thanks. It looks like you sent me a lot of
>what that 9V Regulator is feeding. Also, you have the White Level
>Compression / Amp there too, which is supplied by this same Reg. There is a
>Pot on that area - is it R2298 or R2295? I have an R2298 on the Main board
>right near Q2214, and I think this is it? If I turn it, it alters the RED
>Just a bit, almost luminently....so I think that is working, at least
>somewhat....? It behaved the same before the Regulator Change. Also, if I
>short the SETUP Pins on the CRT PCB, the Picture seems to DIM , and thats
>about all. Not sure if thats correct?
>
>Steve Hearns
>Technotronic Dimensions, NY [USA]
>WWW.TECHNOTRONIC-DIMENSIONS.COM
>1-877-817-9885 (Voice / Fax Toll Free - US Only)
>
>
>----- Original Message -----
>From: "Willie Hunter" <williehunter2@xxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Sunday, March 14, 2004 12:08 PM
>Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
>
>
>Steve, did you get the PDF file I sent to your mailbox?
>Willie.
>Hunter TV
>Detroit,Mich.
>
>
> >From: "Technotronic Dimensions" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> >Reply-To: techassist@xxxxxxxxxxxxx
> >To: <techassist@xxxxxxxxxxxxx>
> >Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
> >Date: Sun, 14 Mar 2004 11:58:14 -0500
> >
> >Sorry George- Was a Typo. I meant LM7809 was the original .
> >
> >Steve Hearns
> >Technotronic Dimensions, NY [USA]
> >WWW.TECHNOTRONIC-DIMENSIONS.COM
> >1-877-817-9885 (Voice / Fax Toll Free - US Only)
> >
> >
> >----- Original Message -----
> >From: "George" <grndmstrg@xxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Sunday, March 14, 2004 3:32 AM
> >Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
> >
> >
> >Hold the phone!!!! LM7909 is a negative voltage regulator (-9v) while
>7808
> >is a positive (+8v) regulator. You might try a 7908 for testing.
> >
> >George
> >Afana Electronics
> >Moreno Valley, CA
> >----- Original Message -----
> >From: "Technotronic Dimensions" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Saturday, March 13, 2004 8:13 PM
> >Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
> >
> >
> > > Making Progress....I think?
> > >
> > > I resoldered the Flyback just for the Heck of it. Then I went
> > > in and was gonna resolder that V.Reg IC with the Heat Sink on it which
> >was
> > > Overheating on the Main board. I think its IC4121. It just came apart
> >when
> >I
> > > touched it - the leeds just broke near the Case. Its an LM7909 , and I
> >had
> >a
> > > 7808 Laying around here, so I threw that in with a bigger heat sink
> >salvaged
> > > from an Old Monitor Chassis.
> > >
> > >
> > > Fired it up with the regular heaters, and I must say
>the
> > > Picture is looking better. Its less Grainy, but I still have too much
> >red.
> > > Its Just enough to prevent the color WHITE from being produced in the
> >mix.
> >I
> > > shut down, then redid the Wrap on the FBT as Promised. This Time I
> >measured
> > > the Original Heater was 4.2VAC , and I made enough turns duplicating
> >around
> > > 3.9-4VAC on the FBT Core gimmick. When I Powered using that, I dont
> >really
> > > see much a Difference. The Red is still prominent, and reducing the
>POT
> >does
> > > not eliminate it totally. Could I have an unsalvagable CRT? Or could a
> >Spark
> > > Gap or other Component on the CRT PCB cause this? Maybe a bad CRT
> >Socket?
> > >
> > > Also, could perhaps that V.REG IC have damaged other items on the Main
> > > Board Like an IC relating to color? Or Could I have a Bad Cap on that
> > > causing the problem? The IC does
> > > not get as hot with the New Heat Sink, but still quite hot & did not
> > > measure the Voltages
> > > on it. Everything looks fine, Except there is no White....its pink,
>even
> >the
> > > Snow.
> > >
> > > Willie Hunter Sent me a Print of the CRT PCB - but do not have the
> >Chassis
> > > Print, nor do I think its in the archives.
> > >
> > >
> > > PS: If it is the CRT, is there a way to "ZAP" that Red Gun somehow to
> >try
> >to
> > > eliminate the Dirt or Junk From it? I rarely get into CRT problems too
> >much,
> > > so am not sure if junk on a Gun causes that Color to be more
>prominent?
> >I
> > > read somewhere along time ago, someone took a 1 Ohm Resistor, and
>jumped
> >I
> > > think it to G2 and the suspected Gun some way or another, and was able
> >to
> > > clear a fault....? The Resistor Opens up , but not before some extra
> >juice
> > > was able to dislodge the Debris...at least thats how I remember it.
> > >
> > >
> > > Steve Hearns
> > > Technotronic Dimensions, NY [USA]
> > > WWW.TECHNOTRONIC-DIMENSIONS.COM
> > > 1-877-817-9885 (Voice / Fax Toll Free - US Only)
> > >
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Saturday, March 13, 2004 9:43 AM
> > > Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
> > >
> > >
> > > Steve,
> > > Try different number of wraps around the fly to achieve the proper
> >voltage.
> > >
> > > Jeff Dougherty
> > > Intrepid Video TV/VCR
> > > 263 S Front St
> > > Steelton PA 17113
> > > fax...717-564-4952
> > > www.intrepid-video.com www.tech-repair.net
> > >
> > > ----- Original Message -----
> > > From: "Technotronic Dimensions" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, March 12, 2004 10:51 PM
> > > Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
> > >
> > >
> > > Hi Willie:
> > >
> > > Yes, I had done that before , and still had a problem
>with
> >the
> > > Pix.....although a different one. What threw me off was when I hooked
> >the
> > > normal Heaters back up, and measured the Voltage on my 4-5 Turns of
>Wire
> >on
> > > the FBt core, I had lost it....it was less than 1VAC. Thats when I
> >started
> > > doubting the Flyback. I guess I will Rewind it again, and measure it.
>It
> >was
> > > awfully strange.
> > >
> > > Steve Hearns
> > > Technotronic Dimensions, NY [USA]
> > > WWW.TECHNOTRONIC-DIMENSIONS.COM
> > > 1-877-817-9885 (Voice / Fax Toll Free - US Only)
> > >
> > > ----- Original Message -----
> > > From: "Willie Hunter" <williehunter2@xxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, March 12, 2004 9:29 PM
> > > Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
> > >
> > >
> > > Nothing is wrong with the G2 Voltage.what you have is a bad
> >tube.Isolating
> > > the heaters from
> > > the circuit and put about 3 or 4 of wire around the flyback core will
> >act
> >as
> > > a booster.
> > > but the filament has to be totally disconnected from the rest of the
> > > circuit.
> > > Willie.
> > > Hunter tv
> > >
> > >
> > > >From: "Technotronic Dimensions" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> > > >Reply-To: techassist@xxxxxxxxxxxxx
> > > >To: <techassist@xxxxxxxxxxxxx>
> > > >Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
> > > >Date: Fri, 12 Mar 2004 21:12:45 -0500
> > > >
> > > >Hi Bob:
> > > >
> > > > Thanks for the Tip. I now believe the FBT is for the
> >Most
> > > >part OK. the Focus becomes sort of "tight" near the final 80-90% of
>the
> > > >Rotation of the Control when turning it, but have seen this before on
> >other
> > > >Sets, so I think its ok. The Screen seems sort of Weak, as it too
> >needs
> >to
> > > >be near 80-90% of Maximum for it to have a Decent level, but for the
> >most
> > > >part Acceptable.....unless this is a 'weak' flyback? Would not too
>the
> >HV
> > > >be
> > > >lower than usual, and could that explain why I have NO white at all?
>I
> >have
> > > >no HV Proba (yet) , and I posted in another message my G2 I believe
>is
> > > >394VDC....its the Grey Wire from the Flyback, not the Red Focus wire.
>I
> > > >dont
> > > >do too many Repairs on sets which require extensive Voltage
> >measurements,
> > > >so
> > > >excuse me if my references are not correct. I think the Grey is the
>G2
> >but
> > > >not sure.
> > > >
> > > >
> > > >Regards,
> > > >
> > > >Steve Hearns
> > > >Technotronic Dimensions, NY [USA]
> > > >WWW.TECHNOTRONIC-DIMENSIONS.COM
> > > >1-877-817-9885 (Voice / Fax Toll Free - US Only)
> > > >
> > > >
> > > >----- Original Message -----
> > > >From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
> > > >To: <techassist@xxxxxxxxxxxxx>
> > > >Sent: Friday, March 12, 2004 1:41 PM
> > > >Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
> > > >
> > > >
> > > >Steve,
> > > > There are three pots on the CRT board R-B-G..That module
>was
> >used
> > > >on Zenith's L-M line along with the A63/A68 picture tubes that
> > > >failed...Another point a bad tube or spark gap in CRT socket can
>cause
> >the
> > > >focus/screen controls to fail on the HOT..
> >
> > > >Bob,
> > > >
> > > >Bobs TV Worcester, ma
> > > >
> > > >woodman1@xxxxxxxx
> > > >
> > > >Main 508-853-1482
> > > >Fax 508-853-1480
> > > >----- Original Message -----
> > > >From: "Technotronic Dimensions" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> > > >To: <techassist@xxxxxxxxxxxxx>
> > > >Sent: Thursday, March 11, 2004 10:24 PM
> > > >Subject: [TechAssist] Re: Wards /Zenith 9-1407 TV Model MWM2553Y
> > > >
> > > >
> > > > > Willie:
> > > > >
> > > > > I didnt see an option for RED or any color for that
>matter
> >in
> > > >the
> > > > > menu. I did notice that none of the color controls (IE :TINT) in
>the
> > > >menu
> > > > > change the color at all - but the sliders move when you actuate
> >them.
> > > >Same
> > > > > for Brightness.
> > > > >
> > > > > I rehooked up the Tap from the FBT to the heaters ust to
> > > >compare,
> > > > > and I had a sort of loud hissing noise like HV escaping somewhere
> >near
> > > >the
> > > > > neck. The Pix looked more out of Focus, so I reattached the normal
> > > >heaters
> > > >,
> > > > > but now my Tap which was putting out like 4.5V, now is putting out
> >less
> > > >than
> > > > > 1 VAC. Could the Flyback have weakened during my test ? I notice
>Now
> >the
> > > > > Focus Pot has to be near all the way CW to get decent Focus, and
>so
> >does
> > > >the
> > > > > Screen Control in order to get a fair Brightness. Flyback is a
> >95-4372.
> > > > >
> > > > > Steve Hearns
> > > > > Technotronic Dimensions, NY [USA]
> > > > > WWW.TECHNOTRONIC-DIMENSIONS.COM
> > > > > 1-877-817-9885 (Voice / Fax Toll Free - US Only)
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Willie Hunter" <williehunter2@xxxxxxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Thursday, March 11, 2004 9:45 PM
> > > > > Subject: [TechAssist] Re: Fw: Wards Signature 2000 TV Model
>MWM2553Y
> > > > >
> > > > >
> > > > > Go to setup and adjust the red.
> > > > > Willie.
> > > > > Hunter TV
> > > > >
> > > > >
> > > > > >From: "Technotronic Dimensions"
><steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> > > > > >Reply-To: techassist@xxxxxxxxxxxxx
> > > > > >To: <techassist@xxxxxxxxxxxxx>
> > > > > >Subject: [TechAssist] Re: Fw: Wards Signature 2000 TV Model
> >MWM2553Y
> > > > > >Date: Thu, 11 Mar 2004 21:09:44 -0500
> > > > > >
> > > > > >Replaced Q5106, and tried wire around FBT core for heater.
>Retrace
> >was
> > > > > >gone,
> > > > > >color improved, but still Streaky and unbalanced. Found R5110
>open.
> > > > > >Replaced, took off the heater boost , and put regular Heaters
>back
> >on.
> > > > > >Color
> > > > > >much better, balanced, no streaks, but too much red....hardly
>any
> >blue
> > > >or
> > > > > >Green. Replaced other 2 120K resistors for the other 2 Colors
>like
> > > >R5110
> > > > > >was
> > > > > >for , still have too much red, and hardly any blue or green. Is
> >this
> >a
> > > >Bad
> > > > > >CRT ? Any way to determine it without a CRT checker /
>Rejuvinator?
> > > > > >
> > > > > >Steve Hearns
> > > > > >Technotronic Dimensions, NY [USA]
> > > > > >WWW.TECHNOTRONIC-DIMENSIONS.COM
> > > > > >1-877-817-9885 (Voice / Fax Toll Free - US Only)
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >----- Original Message -----
> > > > > >From: "Technotronic Dimensions"
><steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> > > > > >To: "Tech_Assist.ORG" <techassist@xxxxxxxxxxxxx>
> > > > > >Sent: Thursday, March 11, 2004 6:41 PM
> > > > > >Subject: [TechAssist] Fw: Wards Signature 2000 TV Model MWM2553Y
> > > > > >
> > > > > >
> > > > > >Just Found a Sticker on the Chassis: 9-1407 and Q5106 Reading 200
> >Ohms
> > > >E-C
> > > > > >Both ways.
> > > > > >Going to replace it, and Winstips Says to Isolate the Heaters
>with
> >5
> > > >Turns
> > > > > >around the FBT core with with 20 Ga. Wire.
> > > > > >
> > > > > >I see this CRT is commonly bad.
> > > > > >
> > > > > >Steve Hearns
> > > > > >Technotronic Dimensions, NY [USA]
> > > > > >WWW.TECHNOTRONIC-DIMENSIONS.COM
> > > > > >1-877-817-9885 (Voice / Fax Toll Free - US Only)
> > > > > >
> > > > > >
> > > > > >----- Original Message -----
> > > > > >From: "Technotronic Dimensions"
><steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> > > > > >To: <techassist@xxxxxxxxxxxxx>
> > > > > >Sent: Thursday, March 11, 2004 6:08 PM
> > > > > >Subject: Wards Signature 2000 TV Model MWM2553Y
> > > > > >
> > > > > >
> > > > > >|
> > > > > >| Not Sure what chassis this is the Same as? It has a Zenith CRT
> > > >A63ADG31X
> > > > > >,
> > > > > >| with ZENITH Stamped in the rubber FBT Anode Cup. Safe to say
>its
> >a
> > > >Zenith
> > > > > >| Chassis, but Which? CRT seems to be 25-27 Inches.
> > > > > >|
> > > > > >| Powers up ok, but Colors are Dim, overall Dim / unbalanced
> > > >Colors....as
> > > > > >if
> > > > > >| the Gamma is missing. IC4121 is getting real hot, and its Clip
>on
> > > >Heat
> > > > > >Sink
> > > > > >| is loose. Not sure if its related.
> > > > > >|
> > > > > >| Mfr'd Aug. 1994. Any help appreciated, Thanks.
> > > > > >|
> > > > > >| Steve Hearns
> > > > > >| Technotronic Dimensions, NY [USA]
> > > > > >| WWW.TECHNOTRONIC-DIMENSIONS.COM
> > > > > >| 1-877-817-9885 (Voice / Fax Toll Free - US Only)
> > > > > >|
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
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