[TechAssist] Re: GE TV CTC177AA3 - 25GT503 - Dead - No SMPS startup

  • From: "repair1" <repair1@xxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Sat, 6 Mar 2004 16:51:56 -0600

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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