Hi!
I have a Velodyne CT-120 that I use in my home entertainment system. The issue that I'm having is that it keeps blowing its fuse on the circuit board, 2amp fuse. I've taken the circuit board out of the sub cab, looked around for anything obvious like swollen/cracked components, burnt or scorched spots, shorted wires/solder bleed over, cracked solder joints, NOTHING. But I did find some white powdery residue on one side of a black wire connected to rear circuit board that's in front of the transformer and there are a couple of condensers in that area on same board as well. Not really sure what the white powdery substance is, also there is some brownish substance in a couple of places on the rear board closes to transformer on a cap. I installed a brand new fuse last night and while I still had the circuit board/back panel removed away from the cab, I plugged in the power cord, turned power switch on and the fuse blew right away. If you have any insight that you could share I'd sure appreciate it so very much. Thank you!
I have a Velodyne CT-120 that I use in my home entertainment system. The issue that I'm having is that it keeps blowing its fuse on the circuit board, 2amp fuse. I've taken the circuit board out of the sub cab, looked around for anything obvious like swollen/cracked components, burnt or scorched spots, shorted wires/solder bleed over, cracked solder joints, NOTHING. But I did find some white powdery residue on one side of a black wire connected to rear circuit board that's in front of the transformer and there are a couple of condensers in that area on same board as well. Not really sure what the white powdery substance is, also there is some brownish substance in a couple of places on the rear board closes to transformer on a cap. I installed a brand new fuse last night and while I still had the circuit board/back panel removed away from the cab, I plugged in the power cord, turned power switch on and the fuse blew right away. If you have any insight that you could share I'd sure appreciate it so very much. Thank you!
is the speaker ok and are any output transistors shorted?
check for DC on the output of the amp while running it on a current limiter/dim bulb tester.
check for DC on the output of the amp while running it on a current limiter/dim bulb tester.
Yes the speaker is good. I haven't tested the transistors or anything yet. I've been checking on different forums and submitted an email to a Velodyne tech that hasn't answered yet, going to have to call, to see if this is a common problem and what the fix is. I'm going ahead at this time and check the DC output of the amp by while running it on a dim bulb tester. Thank you for your assistance! Much appreciated! Cheers!
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