8bitbubsy
Well-known member
Hi ya'll,
Lately the CRT on my SE/30 has been acting weird when it comes to the vertical deflection, after a lot of investigation and experimenting it turned out to be one of the old rotary resistor pots. They were full of dust, signs of tin whiskers and the metal on it had started to oxydize. I tried to clean it up but I feel that it's time to buy new ones. :b&w:
Any source for replacement pots? I don't have my SE/30 open at the moment, but do any of you lads remember the values, or at least can check them for me?
There's three of them -- two big ones with black rotary adjusters on the top, and a small one. I need to know the exact ratings for these (e.g. 10K, 100K ... )!
PS: I'm not including the external high-voltage cutoff one for the brightness that can be adjusted from the front of the case, but it would be good to replace that one as well.
The hard part will be finding a replacement for the two big ones, they seem to be non-standard parts. The closest ones I've found does not have the same pin arrangement. Not to mention that it has to be adjustable from underneath, through the PCB.
This is something everyone should do to their compact Mac analog boards, they're old! xx(
Lately the CRT on my SE/30 has been acting weird when it comes to the vertical deflection, after a lot of investigation and experimenting it turned out to be one of the old rotary resistor pots. They were full of dust, signs of tin whiskers and the metal on it had started to oxydize. I tried to clean it up but I feel that it's time to buy new ones. :b&w:
Any source for replacement pots? I don't have my SE/30 open at the moment, but do any of you lads remember the values, or at least can check them for me?
There's three of them -- two big ones with black rotary adjusters on the top, and a small one. I need to know the exact ratings for these (e.g. 10K, 100K ... )!
PS: I'm not including the external high-voltage cutoff one for the brightness that can be adjusted from the front of the case, but it would be good to replace that one as well.
The hard part will be finding a replacement for the two big ones, they seem to be non-standard parts. The closest ones I've found does not have the same pin arrangement. Not to mention that it has to be adjustable from underneath, through the PCB.
This is something everyone should do to their compact Mac analog boards, they're old! xx(
