[TechAssist] Re: RCA M#35gt657 CTC177cc
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 12 Dec 2003 11:21:11 -0500
I think Pin 1 should be -40V.
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "Mouton's Electronics" <moutons@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, December 11, 2003 4:45 PM
Subject: [TechAssist] RCA M#35gt657 CTC177cc
> This set came in with a bad U4101 and CR4106 was shorted. Changed both and
in standby the reg B+ is up at 198vdc, set does start up but the reg. B+ is
then LOW 120vdc.
> I have already changed the smps transformer, C4125, C4135 and checked
R4135, R4128, R4105, CR4102 and all check good.
>
> U4101 standby voltages
> Pin 1 -35v
> pin 2 -29v
> pin 3 0
> pin 4 .7
> pin 5 0
> pin 6 0
> pin 7 0
> pin 8/9 0
> pin 11/12 168
>
> Thanks in advance,
>
> Jason
> Mouton's Electronics
>
>
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