[TechAssist] Re: RCA F35731MB CTC169JS6 - Shuts off when signalsource is connected.

  • From: Tel-Tek <teltek3@xxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Mon, 30 May 2005 21:21:33 -0400

OK...Let me check in the morning...May have something for you. Sounds
familiar.

-Ed-
-- 
Tel-Tek Electronics
Ontario-Canada   

teltek3@xxxxxxxxxxxx
teltek@xxxxxxxxx   


> From: LeRoy Westlund <llw@xxxxxxxxxx>
> Reply-To: <techassist@xxxxxxxxxxxxx>
> Date: Mon, 30 May 2005 19:11:09 -0600
> To: <techassist@xxxxxxxxxxxxx>
> Subject: [TechAssist] Re: RCA  F35731MB  CTC169JS6 - Shuts off when
> signalsource is connected.
> 
> I checked Q2905. It tested good.
> 
> LLW
> 
> LeRoy Westlund
> Westlund TV & Electronics
> 97 North Main                             " I forgot,..to remember,..
> Centerfield, UT 84622-0087           to forget "
> Ph./Fax  435-528-3822
> mailto:LLW@xxxxxxxxxx
> 
> -----Original Message-----
> From: Tel-Tek <teltek3@xxxxxxxxxxxx>
> To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
> Date: Monday, May 30, 2005 6:57 PM
> Subject: [TechAssist] Re: RCA F35731MB CTC169JS6 - Shuts off when
> signalsource is connected.
> 
> 
>> LeRoy.
>> Video Buffer may be at fault. Not sure Q905 or Q906.
>> Let you know in the morning.
>> Front center of chassis.
>> 
>> -Ed-
>> --
>> Tel-Tek Electronics
>> Ontario-Canada
>> 
>> teltek3@xxxxxxxxxxxx
>> teltek@xxxxxxxxx
>> 
>> 
>>> From: LeRoy Westlund <llw@xxxxxxxxxx>
>>> Reply-To: <techassist@xxxxxxxxxxxxx>
>>> Date: Mon, 30 May 2005 18:40:16 -0600
>>> To: TechAssist <techassist@xxxxxxxxxxxxx>
>>> Subject: [TechAssist] RCA  F35731MB  CTC169JS6 - Shuts off when signal
> source
>>> is connected.
>>> 
>>> Hi members,
>>> This set will run all day with raster only. As soon as I hook up a signal
>>> source (Antenna, or external input), it will shut off after about 10
>>> seconds. Picture is beautiful, and all voltages from the power supply
> read
>>> normal, for that length of time.
>>> When it shuts off, I have to unplug the power for at least 5 minutes,
> before
>>> my standby voltages will return.
>>> 
>>> Parts replaced so far, with OEM part numbers :
>>> Regulater chopper output. (200165)
>>> Regulator IC (200419)
>>> Regulator caps. (2.2 @ 100 195691),(15 @ 63 214756),(470 @ 35 190496),(39
> @
>>> 100)
>>> Horz cap (.48 @ 250 197518), CR4118 (164589), C4703 (47 @ 250).
>>> B+ cap (470 @ 180 200147).
>>> Tested luminance buffer Q2906= OK.
>>> 
>>> Voltage readings:
>>> B+ = standby = 143.2 (Run = 138.2)(adjusted B+ standby for 140, no help).
>>> CR4118 = standby = 13.4 ( Run = 12.1)
>>> Voltage  Q4101-Base = standby = -.19 ( Run = -1.4)
>>> 
>>> If I pull the CRT socket, set will run OK, and not shut-off.
>>> Works the same on my 27" test jig in the shop, as it does hooked up in
> the
>>> home, to the original Yoke / CRT load combination.
>>> 
>>> Would it be wise to replace the IFT at this stage of the game ? Customer
>>> does not want to spend more then $200 for this repair. I may need to
> refund
>>> about $100-165, that I already collected. It worked for about 1/2 hour
> when
>>> I first took it back, but, it went out again after customer already paid
> me.
>>> 
>>> Anymore help on this would be appreciated.
>>> LLW
>>> 
>>> LeRoy Westlund
>>> Westlund TV & Electronics
>>> 97 North Main                             " I forgot,..to remember,..
>>> Centerfield, UT 84622-0087           to forget "
>>> Ph./Fax  435-528-3822
>>> mailto:LLW@xxxxxxxxxx
>>> 
>>> 
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