Mackie CR4 (probably Zenner diodes burned.(2)

metermannd

Joined Oct 25, 2020
332
I would think that if the zener diodes CR3 and CR4 were replaced, the replacements should be elevated above the PC board surface - one, to get better air circulation around the part, and two, keep these obviously hot-running components from further charring the board.
 

Thread Starter

Alun Davies

Joined Jul 24, 2022
2
I would think that if the zener diodes CR3 and CR4 were replaced, the replacements should be elevated above the PC board surface - one, to get better air circulation around the part, and two, keep these obviously hot-running components from further charring the board.
Hello, thanks for your reply. Makes sense to me!
Can you or anyone tell me what voltage rating I should order for the diode replacement parts please?
Thank you.
 
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