I recapped a classic analog board not knowing if it worked. I have gotten it to turn on and boot. I am getting like shadow lines across screen from icons or open windows. Is this an adjustment issue or something with cap job?
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Is this classic an analog adjustment
- Thread starter imactheknife
- Start date
Ok, will do.
The brightness pot seemed to do nothing. Focus looked more like brightness adjustment then focus
Have a hex key that fits i am sure lol.. i feel feel it reach its end on either side when turning it. Pots go bad too no??
What voltages are you getting?
I often have trouble with PP1 on these boards, a good clean with IPA and a turn back and forth goes a long way. Make sure to get voltage back where it needs to be and use non-conductive tools.
I often have trouble with PP1 on these boards, a good clean with IPA and a turn back and forth goes a long way. Make sure to get voltage back where it needs to be and use non-conductive tools.
Good idea
will try
Was getting proper voltages but will check again
Got a closer look at your pics, looks like horizontal smearing. I'm not a CRT expert by any stretch but I understand it can be caused by interference, poor connections, bad ground, or a failing CRT. Could also happen if you used high ESR caps, but I doubt that's the prob.
Do you have a working Classic or Classic II? Process of elimination?
Do you have a working Classic or Classic II? Process of elimination?
I have a classic and classic ii recapped boards. Both result in same thing. My other analog board has issues too. Will take apart and snap a few pics of caps. They could be an issue? I double checked my caps so none were reversed. Made sure no shorts that i could see. I didn’t know the state of either analog boards as i recapped analog first while trying to figure out logic board issues. Then other classic and classic ii’s came into my life with working analog boards so i could test my previous logic boards. Once i knew i had a good working logic board i went back to the original analog boards i recapped and found out they don’t want to play lol.. well, they do, just need to figure out the issue… appreciate your input
Caps might cause an issue if you somehow chose wildly out of spec (high impedence / high ESR) for the output section of the analog board, but I think that's really unlikely because even general purpose caps should work OK. More likely it's a bad CRT, that's my guess anyway. But the only way to tell is by swapping components to isolate the flaw. (The Classic II AB will work on the Classic, but not the other way around AFAIK.)
Oh wow, didnt know that classic AB wont work with classic ii, thanks for that!. Will see what happens this weekend. Havent been able to get back to them as other projects have taken over lol
