Mac Plus screen flickers dim during warmup

MacOfAllTrades

Tinkerer
Oct 5, 2022
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I have a Mac Plus I redently got. It was in tired shape but working. I recapped the analog board and reflowed the solder joints for all (3?) of the connectors.

Everything works great except on a cold start (eg mac been sitting for hours) the screen kinda flickers dim momentarily every few seconds but after “warming up “ for a minute or less problem is gone.

In case it is relevant - i have some issue (bad cutoff pot perhaps) where the luminance cutoff acts like it is set to max though I keep it dimmed via the brightness knob. I should probably sort this out first to be sure it isnt causing the issue but…


 

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Mu0n

Active Tinkerer
Oct 29, 2021
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How did you reflow the solder joints? Did you completely remove the old solder, clean, then put new one in? Or just heated and added new to old?