[TechAssist] Re: Sony PTV KP53S25 Red distortion upper right corner
- From: "LeRoy Westlund" <llw@xxxxxxxxxx>
- To: "TechAssist" <techassist@xxxxxxxxxxxxx>
- Date: Wed, 11 Sep 2002 12:38:40 -0600
I will answer my own question on this.
I switched the Red and Blue yoke plugs.
The problem remained with the Red CRT.
I unplugged the CN1612 plug (which is the Red convergence output, from the
"D" board. Looking into the Red CRT,...the problem went away. I am going to
change the Red convergence amp (STK392-010). I will report the results.
Thanks,
LLW
LeRoy Westlund
Westlund TV & Electronics " It's such a pretty world
93 North Main today !....
Centerfield, UT 84622-0087 Look at the Sunshine. "
Ph./Fax 435-528-3822 :-)
mailto:LLW@xxxxxxxxxx
-----Original Message-----
From: LeRoy Westlund <llw@xxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Wednesday, September 11, 2002 9:45 AM
Subject: Re: [TechAssist] Re: Sony PTV KP53S25 Red distortion upper right
corner
>Thanks Demon,
>Is it OK to switch the Red, and Blue yoke plugs, long enough to see if the
>problem changes to Blue instead of Red ?
>
>LLW
>
>LeRoy Westlund
>Westlund TV & Electronics " It's such a pretty world
>93 North Main today !....
>Centerfield, UT 84622-0087 Look at the Sunshine. "
>Ph./Fax 435-528-3822 :-)
>mailto:LLW@xxxxxxxxxx
>
>-----Original Message-----
>From: Damon <DAMON101@xxxxxxxxxxxxxx>
>To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
>Date: Wednesday, September 11, 2002 7:43 AM
>Subject: [TechAssist] Re: Sony PTV KP53S25 Red distortion upper right
corner
>
>
>>
>>I'd take along a red convergence amp, is this the one with the
STK392-010's
>>mounted on a stand up board located on the right side if you're viewing it
>>from behind the PTV? Or are the Conv amps located (same position, behind)
>>nearest you on the Left board?
>>(Left board/Deflection sometimes just has bad solder). Right side
>>board.....I've seen the Red amp fail considerably.
>>
>>Damon Brunger
>>damon101@xxxxxxxxxxxxxx
>>Telrad Electronic Services
>>Ft Wayne, IN 46815
>>----- Original Message -----
>>From: "LeRoy Westlund" <llw@xxxxxxxxxx>
>>To: "TechAssist" <techassist@xxxxxxxxxxxxx>
>>Sent: Tuesday, September 10, 2002 11:52 PM
>>Subject: [TechAssist] Sony PTV KP53S25 Red distortion upper right corner
>>
>>
>>>
>>> Hi members,
>>> I have been working on this Sony KP53S25.
>>> I replaced the Blue CRT for fluid leakage.
>>> I cleaned and repaired contaminated "E" board.
>>> I also repaired the Power supply board as needed.
>>> I now have a good picture on the bench in the shop.
>>> I am deflecting my picture onto the ceiling.
>>> I know I will have to do my fine tuning for convergence, etc, after I
>>> reinstall the CRT array, and the chassis in the home.
>>> The only thing that worries me,...is that the Red CRT shows a distorted
>>> picture up in the top left corner of the screen. It is rounded off for
>>about
>>> 2 inches. The other 3 corners are square. The Blue, and the Green, have
>>> square corners on all 4 corners.
>>> I am wondering if this is caused by a simple adjustment, or, do I have a
>>> problem in the yoke return ckt. of the Red CRT ? Maybe the customer
>won't
>>> even notice this small defect, if I don't point it out to him.
>>> Would you take it back in this condition ?
>>>
>>> LLW
>>>
>>> LeRoy Westlund
>>> Westlund TV & Electronics " It's such a pretty world
>>> 93 North Main today !....
>>> Centerfield, UT 84622-0087 Look at the Sunshine. "
>>> Ph./Fax 435-528-3822 :-)
>>> mailto:LLW@xxxxxxxxxx
>>>
>>>
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>>
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