Question about Diamond Audio D5-1200.1 Car Audio Amplifier

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Diamond Audio D5 1200.1 wont power up

I received a Diamond Audio board, D5 1200.1 board. It was missing some surface mount transistors, and might be missing some other parts, I am not sure. I have compared pics of my board to other working boards and it looks the same. When the fuses are removed, there is 13.8 volts throughout the board, but when the fuses are reinserted, the voltage drops to 0.55 or so and there is a buzz from the baord. The protect lights do not come on either. I need a good pic of the board, or some help on where to start troubleshooting. Heard of this before???

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You have a dead short on the board If your missing parts I myself would not bother to fix but if your up to a callenge contact they can assist you in getting the parts and diagrams for you

Posted on Mar 31, 2006


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We have a picture, but no sound. Already confirmed it is not and issue with the cable company.

If you have no audio on either the AV inputs or off-air TV channels, then it is probably in the audio output stage - the audio IC and all components in that part of the board - including surface-mounted ones - as well as dry joints/broken tracks etc. could be a possible cause. It is probably a leaky surface-mounted capacitor, transistor or diode which is preventing the audio from being produced.

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