Audiopipe 3K

[Deadly Sones]

Not sure about this amp... never worked on an Audiopipe amp before, let alone a dual board 3K (2 1.5k's strapped internally).

When remote power is applied nothing happens. No power light, no protect light. Nothing. I was told one board stopped working a bit ago, now, nothing from either.

The slave seems to have drive and output waves. Not sure if anything else is up with it yet. The master seems to be doing nothing. There is no voltage on the 494, its doing nothing at all.

I'm not sure where the remote gets connected to master from the slave. What else could cause this? There are so many little smd things on here, lol. Anyone come across a similar incident?

 

[jkrokenberger]

Treat that as 2 separate amps because it is. Consider the board with the input/pre-amp as primary and the board with the power/output the secondary. Look for bad solder joints, broken component legs, the basics. First thing is to get the 494's running and see what kind of current it pulls. Are there any visually burnt components?

 

[Deadly Sones]

OK so, even though the slave amp seems to have square waves on the outputs, they test as being shorted. Pins 1-2 0 ohms, 1-3 10K ohms, 2-3 0 ohms pulsing when tested in the circuit. On all the outputs in both banks. The master side outputs give relatively normal readings.

I hate that I know very little about these internally strapped amps.

 

[Deadly Sones]

NO there is not. I'm going to remove it from the case and separate them.

 

[Deadly Sones]

The amp does seem to be pulling a bit of current. Dropping to 11v with resistor.

Here is the nice square waves coming from the slave outputs that test shorted in the circuit. I don't get it.