[TechAssist] Re: RCA Chipper Checker, first time user, help please

  • From: peggs <peggs@xxxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Sun, 21 Jul 2002 20:02:08 -0500

I spent quite a while repairing a CTC169 PTV chassis once.
The Vertically mounted Black Stretch Module(and main PCB area)
looked like it had had something spilled there. 
There was mouse #2 everywhere also. 
I assumed it was mouse #1 that was the 'spillage'.
The Black Stretch Module repaired the set(intermittent loss of
Luminance/Horizontal Sync)

Peggs

At 04:00 PM 7/21/02 -0400, you wrote:
>
>What an original problem to find in a set. Was it a grey one or a brown or
>white mouse? Is that mouse not house trained? I would not like a non house
>trained mouse living in my living quarters! At least we can laugh about our
>misshappenings or I hope so.
>Have a good time and much profit.
>Wilf Blakey
>Blakey TV,Kirkland Lake,Ont
>wblakey@xxxxxxxxxxxxxxxx
>
>----- Original Message -----
>From: "Gary McCartney" <number63@xxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: July 20, 2002 6:34 PM
>Subject: [TechAssist] RCA Chipper Checker, first time user, help please
>
>
>>
>> I have my new Chipper Checker connected to a CTC178L projection set. The
>> set is dead because some mouses pee'd on the chassis (I mentioned this
>> set a few months ago in case anyone remembers, but I only work on it
>> when I'm caught up with customers items- it belongs to my buddy who is
>> very patient).
>>
>> I installed the new eeprom and microprocessor kit before I got the
>> Chipper Checker.
>> Now with the Chipper Checker connected, I get error code 136, TVB (tone/
>> volume/ balance) which means U1503 is not communicating with the
>> micrprocessor. Does this mean that U1503 or associated circuit is bad?
>> I do have U1600 removed from the circuit (stereo decoder IC) so why
>> doesn't Chipper Checker come up with error code 128 (no communication
>> from U1600) ?
>> How accurate is this Chipper Checker at determining faults?
>>
>>
>> The basic problem with the set is that when remote power button is
>> pressed, I get 3 chirps, then nothing. During these chirps, I get 120 V
>> pulses B+ on the main 135V line, and I get a nice looking horizontal
>> output waveform on the HOT collector. I have the flyback lead to the HV
>> splitter disconnected. I removed U1600 because of corrosion on the pins.
>> Replaced micro and eeprom because pins were corroded and thought that
>> could be the problem with set not starting. I also have CRT boards
>> unplugged from the tubes.
>>
>>
>> Thanks for any help.
>> --
>>
>>
>>
>> Gary McCartney
>>
>> McCartney Electronics
>> 7134 Fife Rd, RR 7
>> Guelph Ontario Canada N1H 6J4
>> Fax: (519)821-1530
>> email: number63 (at) inetsonic.com
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>
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