Im having trouble getting 180V off of pin 5 of p900. Im getting 62V. The picture keeps expanding and retracting. Like its going in and out of focus. The boards been capped, replaced ZD902. Was wondering if a bad flyback could cause this but still show a picture? Could a flyback go partially bad or do they just go dead completely? There is no spark when I discharge the flyback to remove it. It should have a charge after I run it, shouldnt it? The 25k pot is original. Thinking about replacing the it. Im also getting 29.8vdc at pin 1 and -26.8vdc at pin 8 of P900. Not getting 28vdc and -28vdc but close.
I'm also not getting deflection on left upper and lower quadrants of screen. Spot killer is on. It has brand new transistors at Q102, Q605 and Q606. The other chassis transistors tested good. But going to go through Q103, Q705 and Q706 again tomorrow to make sure. Might have fried something after testing. Fuses all good, not blowing. Game plays but vectors not drawing right. Like I said before, only deflection on right side of screen.
And yes I have been though the FAQs
Any input would be appreciated
Thanks,
Dan
I'm also not getting deflection on left upper and lower quadrants of screen. Spot killer is on. It has brand new transistors at Q102, Q605 and Q606. The other chassis transistors tested good. But going to go through Q103, Q705 and Q706 again tomorrow to make sure. Might have fried something after testing. Fuses all good, not blowing. Game plays but vectors not drawing right. Like I said before, only deflection on right side of screen.
And yes I have been though the FAQs
Any input would be appreciated
Thanks,
Dan


