panasonic screen problems


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panasonic screen problems

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halfdead
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Sep 27, 2006, 3:19 AM

Post #1 of 9 (1356 views)
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panasonic screen problems	Can't Post

My Panasonic 32" Model# CT-32SF35W Chassis# AEDP319 is having problems with the picture. It works fine for about 20 minutes and then it goes to a 3 inch picture that is all the way across. Black above and below this 3 inch picture. when troubleshooting with the back off i can bump the main motherboard and pic comes back perfectly. it does have the problem of shutting off but turn down brightness level inside and fixed that. can anyone give me a clue what it is. to me sounds like a bad solder but cant find it.

halfdead
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Sep 27, 2006, 3:52 AM

Post #2 of 9 (1350 views)
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Re: [halfdead] panasonic screen problems [In reply to]	Can't Post

i am wondering if it is bad solder joints on the vertical scan ic. can anyone tell me if this is true and where i can get the schemetics for this unit.

halfdead
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Sep 27, 2006, 5:36 AM

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Re: [halfdead] panasonic screen problems [In reply to]	Can't Post

please point me to the ver scan ic. somebody

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PHTO0076.JPG (755 KB)

halfdead
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Sep 27, 2006, 5:38 AM

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Re: [halfdead] panasonic screen problems [In reply to]	Can't Post

second pic of main board. can anybody point me to the ver scan icjavascript: addTag('cool')
javascript: addTag('cool')

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PHTO0078.JPG (832 KB)

halfdead
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Sep 27, 2006, 5:39 AM

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Re: [halfdead] panasonic screen problems [In reply to]	Can't Post

third pic of main board. ? if this is the ver scan ic.

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PHTO0076.JPG (755 KB)

techchris
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Sep 27, 2006, 7:03 AM

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Re: [halfdead] panasonic screen problems [In reply to]	Can't Post

the vertical ic is screwed to the finned heatsink nearest the big flyback transformer. just resolder all pins

halfdead
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Sep 27, 2006, 7:16 AM

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Re: [techchris] panasonic screen problems [In reply to]	Can't Post

do you know if it is IC 2301-- IC 451--- or --IC 801

halfdead
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Sep 27, 2006, 7:40 AM

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Re: [halfdead] panasonic screen problems [In reply to]	Can't Post

how do you unplug the flyback transformer from the picture tube. and on the bottom of the main board pin 4 of the flyback is not soldered is it supposed to be?

halfdead
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Sep 27, 2006, 2:13 PM

Post #9 of 9 (1315 views)
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Re: [halfdead] panasonic screen problems [In reply to]	Can't Post

resoldered the ver scan ic. tv works perfectly now. thank you for your help. everybodies forums with info helped alot. saved me alot of time and money.

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