[TechAssist] Re: Proscan M# PS52682 PTK171ACB, Wierd Chroma problem-UPDATE

I'll be careful. :-)

John Myers
Myers TV Service Co.
2212 W. State St.
Alliance, OH 44601

Voice / Fax: 330-821-6545
Myers_tv_b@xxxxxxxxxxxxx
http://www.myerstv.net

"[Luke:] I can’t believe it.

[Yoda:] That is why you fail."


Wayne Vanaman wrote:
> Well, the dog is likely to bite you when you try to spank it.
> 
> 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
> 
> 
> John @ Myers TV wrote:
> 
>>OK, I ordered the jungle chip for this dog, but it didn't help. Still, 
>>when I freeze the chip, everything returns to normal.
>>This morning, I wound up at the shop at 6AM, thanks to the time change. 
>>I did some thinking, and thought to check the B+ to the chip.
>>The 9V to the Y/C/V VCC input is running 11.1V!
>>I'm going to change the Zener in the 9V regulator circuit Monday night, 
>>and will report back on my progress.
>>Boy, will I be glad to spank this dog in the butt & send it home!
>>
>>
>>John Myers
>>Myers TV Service Co.
>>2212 W. State St.
>>Alliance, OH 44601
>>
>>Voice / Fax: 330-821-6545
>>Myers_tv_b@xxxxxxxxxxxxx
>>http://www.myerstv.net
>>
>>"[Luke:] I can’t believe it.
>>
>>[Yoda:] That is why you fail."
>>
>>
>>John Myers wrote:
>>
>>
>>>HI,
>>>
>>>This has been here for a couple months. It plays for a minute or two, then 
>>>an interference pattern creeps accross the red & blue CRT's, and they go 
>>>dark. As they go dark, the green CRT gets very bright (no retrace lines).
>>>I've been able to track it back as far as the r-y, and b-y lines coming from 
>>>the Progressive Scan IC, U2401. In the morning, I hope to check voltages on 
>>>U2401. But, I'm hoping to not have to replace the IC as a test. The dealer 
>>>cost is $60!
>>>Has anyone heard of anything like this on the CTC170/171 family of chassis? 
>>>
>>>Thanks,
>>>
>>>John Myers
>>>Myers TV Service
>>>376 E. State St.
>>>Alliance, OH 44601
>>>PH 330-821-6545
>>>e-mail: myers_tv_b@xxxxxxxxxxxxx
>>>http://www.myerstv.net
>>>
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