dbxdx5
Super Member
A little less than a year ago, I was working on an SX-680 that needed a new module for the right channel. Tracked down an NOS one, popped it in, and the unit was good to go.
Fast forward to today, and the same receiver is back on my bench needing a new module for the left channel. Or at least so it appears based on the blown 5A fuse and these voltage readings, which move with the module when swapped to the right side.
Q2
1 -1.33V
2 -34.5V
9 +34.5V
10 +1.33V
Q1
1 +31.6V
2 -34.6V
9 +34.5V
0 +29.4V
Besides ensuring good thermal conductivity between module and heat sink, as well as checking for any shorts in the speaker wiring, what else can/should be done to prevent module failure?
Fast forward to today, and the same receiver is back on my bench needing a new module for the left channel. Or at least so it appears based on the blown 5A fuse and these voltage readings, which move with the module when swapped to the right side.
Q2
1 -1.33V
2 -34.5V
9 +34.5V
10 +1.33V
Q1
1 +31.6V
2 -34.6V
9 +34.5V
0 +29.4V
Besides ensuring good thermal conductivity between module and heat sink, as well as checking for any shorts in the speaker wiring, what else can/should be done to prevent module failure?