[TechAssist] Re: RCA 36v430t no power
- From: Wayne Vanaman <Wayne@xxxxxxxxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 11 Oct 2005 06:15:50 -0500
Hi Dave:
Do you have a schematic?
Check for leaky tp052.
What voltages do you have at
DP080 (125v supply)
DP063 (13.1v supply)
IP050pin 3
On this chassis the power supply monitors the 125 and 13v supply lines.
If the switchmode transformer is making noise it must be doing something.
This is a variation of the ctc203 etc power supplies, so the same rules
follow.
There are too many possibilities for the information provided.
Check RP007 and rp006, 120K resistors. Remember, Thomson likes high
value resistors that open or go high.
Fuses are labeled fzp, check 60, 61, 93.
Wayne Vanaman
Omega Electronics
6904 W Fairfield Dr
Pensacola, Fl. 32506-3310
Wayne@xxxxxxxxxxxxxxxxxxxxx
WWW.PensacolaTVRepair.Com
850-456-5995 voice
850-458-6369 fax
stumpy681@xxxxxxx wrote:
> I have a RCA 36v430t with no power, power supply is not running. I can
> hear the switchmode transformer buzzing. Only have RAW B+. The green
> LED light would come on before, now its dead as well. Cant find
> anything shorted. 21v source reads 2v no 5v .
>
> Any suggestions appreciated
>
> TIA
> Dave
> Authorized Television and Electronics Services
> Smithfield, VA
>
>
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