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Hi
I am working on a tempest board set and I have a screen like one in the picture.
The y-out voltage is correct but x-out dc voltage looks correct but ac voltage doesn't fluctuate just stays high at around 4.2v. So far:
1. Swapped out auxiliary board with good one
2. I have all chips in analog section socketed and swapped all 9 chips with good ones
3. Replaced all tl082's
4. Traced from x-out test point back through circuit and can not find the problem
5. Catbox tester says rom and ram are good
6. 5v lines are 4.85
7. +15v is good
8. -15v is good
9. 6.8v is good
I'm new to tempest so any advice would be appreciated.
The screenshot is sideways I apologize for that
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