Zenith that only sometimes turns on, looking for troubleshooting help

 

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Username: Bustedzenith

Post Number: 1
Registered: May-06
I've got an old Zenith Digital System 3 that's not working right. If I turn it on, the sound starts up right away, but no picture comes on. If it is left on, eventually the picture may come on, when it does, it's normal, but often it will just come on for a minute then go off again.

I've opened it up and cleaned out the dust, I've got plenty of experience in testing boards and components, but I've really never done anything with TVs so I'm not sure where to start. There are a number of labeled modules I could pull and test, but I was hoping to get a suggesting of where I should start.

Thanks in advance for any help.
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