22-01-2016, 05:22 PM
Looks nice...
I wonder if those 68k resistors are in series for start-up? I'm guessing that the larger 75k jobs are part of the snubber, but could be wrong. The 1M jobs seem too high for start-up - wonder if they're for bleeding? Still, anything is possible...
I doubt there will be a problem with the 220uF replacement.
Given the age, I'd be suspicious about the rest of the capacitors. Before I had an ESR meter, I would have changed them on-spec. Now that I have one, I measure them, but frankly, I usually change them anyway. If they're OK now, how long will they last for?
There is a risk of leakage, of course. Not too difficult to clean up on a board like that. but still a PITA.
Guess it depends on how awkward it is to have it all apart again in the future... Personally, I'd just go for it.
If the caps in the PSU are getting tired, that might put some stress on the caps on the main board. Just a though
I wonder if those 68k resistors are in series for start-up? I'm guessing that the larger 75k jobs are part of the snubber, but could be wrong. The 1M jobs seem too high for start-up - wonder if they're for bleeding? Still, anything is possible...
I doubt there will be a problem with the 220uF replacement.
Given the age, I'd be suspicious about the rest of the capacitors. Before I had an ESR meter, I would have changed them on-spec. Now that I have one, I measure them, but frankly, I usually change them anyway. If they're OK now, how long will they last for?
There is a risk of leakage, of course. Not too difficult to clean up on a board like that. but still a PITA.
Guess it depends on how awkward it is to have it all apart again in the future... Personally, I'd just go for it.
If the caps in the PSU are getting tired, that might put some stress on the caps on the main board. Just a though
