[TechAssist] Re: GE TV CTC177AA3 - 25GT503 - Dead - No SMPS startup
- From: "Barry Thompson" <barrystv@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 7 Mar 2004 09:05:10 -0500
Next to the main filter. check Pin 1 of the ic for minus 40 volts + or minus
.5 volts if not change it
barrystv@xxxxxxx
Barrys TV
613 224 3406
Ottawa.Canada.
----- Original Message -----
From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, March 06, 2004 6:29 PM
Subject: [TechAssist] Re: GE TV CTC177AA3 - 25GT503 - Dead - No SMPS startup
> Where is this 1.5Mohm (R4101) resistor, I can't find the darn thing.
>
> Alexandria Electronics
> 50 Harrison Street
> Alexandria, Ontario
> K0C-1A0
>
> mr_fixit@xxxxxxxxxxxx
>
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of David Lessard
> Sent: Saturday, March 06, 2004 6:18 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: GE TV CTC177AA3 - 25GT503 - Dead - No SMPS
> startup
>
> Charles, If this voltage is missing from the start chip shouldn't the
> SMPS still fire up when the TV is first plugged in. Just wondering. I'll
> look at this anyway, thanks.
>
> Alexandria Electronics
> 50 Harrison Street
> Alexandria, Ontario
> K0C-1A0
>
> mr_fixit@xxxxxxxxxxxx
>
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of repair1
> Sent: Saturday, March 06, 2004 5:52 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: GE TV CTC177AA3 - 25GT503 - Dead - No SMPS
> startup
>
> Check R4101(1.5M), I believe.This supplies raw B+ to start chip, hth.
>
>
> Charles Betzler
> Best Electronics
> repair1@xxxxxxxxxxxxx
>
> ----- Original Message -----
> From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, March 06, 2004 4:45 PM
> Subject: [TechAssist] GE TV CTC177AA3 - 25GT503 - Dead - No SMPS startup
>
>
> > When plugged in I don't hear the usual startup sound of the SMPS. SMPS
> > appears to be dead. I've checked the following, R4001, CR4106, CR4704,
> > R4702 and R4517. I believe the problem is the STK73-010 SMPS
> > driver/regulator. Is there anyway of confirming this is the problem or
> > do you guys just normally swap these without giving it a second guess.
> > Does the standby power work off the SMPS because I can't measure
> +5volts
> > anywhere?
> >
> > Thanks in advance,
> >
> > David Lessard
> > Alexandria Electronics
> > 50 Harrison Street
> > Alexandria, Ontario
> > K0C-1A0
> >
> > mr_fixit@xxxxxxxxxxxx
> >
> >
> >
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