[TechAssist] Re: RCA TV, F35750ST, chassis CTC169BG5, shuts down

From: tibstv@xxxxxxxxxxx
To: techassist@xxxxxxxxxxxxx
Date: Fri, 07 Jan 2005 22:45:34 +0000
hi ken
here are some notes i have
PS35653, CTC169BG5  Distorted audio  Replace c1901,c1902 1Uf 50v. almost
impossible to get into top side.
Low Audio
look for 2 small 1mfd caps on the input side of the audio amp ic's
 
Check the following components (all prone to leakage):
 
C1203 C1411 C1412 C1451 Q1400 Q1401 most of them are 100 Ohm 1/2 watt, (R4125),
hope this helps 
--
Tiberio Moreira 
412 Lancaster st 
Leominster Ma. 01453 
Master Liscence # 9176 
tibstv@xxxxxxxxxxx

-------------- Original message -------------- 

> Sorry, just realized that you already changed CR4118. It was just fresh in 
> my mind - I pulled my hair out over that diode a while back and just had 
> another one this week. Sorry about that.... 
> Joel Jacobs 
> Ohio Consumer Electronics 
> Pickerington, Ohio 
> 
> ----- Original Message ----- 
> From: 
> To: 
> Sent: Friday, January 07, 2005 3:13 PM 
> Subject: [TechAssist] RCA TV, F35750ST, chassis CTC169BG5, shuts down 
> 
> 
> > Has been a TV from the pit of xxxx. 
> > 
> > Came in dead, but would click (pulse) four times. Replaced 
> > C4102/242026/2.2@100, C4104/189982/15@63, C4108/208002/39@50, 
> > C4118/470@35/190496, CR4118/164590, C4401/.0162@1600/206009, 
> > C4402/.056@400/200149 , CR4402/243636, & Flyback T4401/200418. Set was a 
> > bit contrary--might have to hit start twice, but looked OK. Already lost 
> > on my estimate, so sent it home. 
> > 
> > Came back two weeks later, with the original symptom. Had used an HR sub 
> > for the flyback because the RCA original has been on backorder for close 
> > to 11 months. Tried an ASTI sub. No change. 
> > 
> > MANY hours later, found the set would come up with the audio pcb 
> > disconnected. Found several bad caps on the board, but problem remained. 
> > It is the 10 watt analog audio pcb 216809, but is NLA. Had a good (?) 
> > used board. Installed. Set ran for about 12 hours then shut off with 
> > original symptom. Floating pin 13, system reset, from the audio board 
> > allows the set to power up with good video, but (of course) no audio. 
> > This is exactly what we found with the original board. At a total loss 
> > for answers. Need help, please. 
> > 
> > TIA, 
> > 
> > 
> > Ken Smith 
> > Gulf Technical Services 
> > 3034 Gulf Breeze Parkway 
> > Gulf Breeze, FL 32563 
> > 850-934-8324 (Voice), 850-932-0819 (fax) 
> > 
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[TechAssist] Re: RCA TV, F35750ST, chassis CTC169BG5, shuts down

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