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Operation thunderbolt pcb

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webster007 View Drop Down

Joined: 14 Dec 2012
Location: norwich
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    Posted: 25 Mar 2020 at 10:48pm

For the corona shut down I have dug out my operation thunderbolt pcb to repair. When i first got it there was no sound. So I left it for a month, plugged it in again and it had a graphics problem. So it ended on the 'when I get the time' jobs.

Mission 1 - Repair graphics problem and restore hope

1 year later here I am.
Setup as follows

Graphic problem

I did some googling and someone had a similar problem and it was a broken/corroded address line track.
So I checked mine with an oscilloscope from source to eeprom and all looked good.
The question is what to check next?
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