Power Amp module for Marshall MG100hdfx wired wrong

[tim]

I do work for several stores in the area. One of the stores likes to buy the parts I use in their repairs...especially if they are more than the typical resistor/capacitor thing. This one had a bad power module (burned so I couldn't just solder on another 7293).

They ordered a new module and I installed it. As soon as the power switch was thrown, my current limiting lamp lit up like a lighthouse.

I finally figured out that the inline connector that goes to the main board was wired exactly backwards. I popped the wires out and wired it the correct way and it now works...but not until after I replaced the damaged original 7293. I don't know where they purchased the part.

Just a heads up.

[g1]

There were a few threads about those a year or 2 back. All the suppliers had them. I think the new stock has been rectified.

[tim]

There were a few threads about those a year or 2 back. All the suppliers had them. I think the new stock has been rectified.

Just my luck...

[g1]

Can you find out who the supplier was and let us know?

[tim]

Can you find out who the supplier was and let us know?

yup...will do. I'll be talking to the music store's buyer Monday.

[g1]

It should not have been CE/AES/tubesandmore, as they were notified: http://music-electronics-forum.com/t32253/#post293222
Nor should it have been anyone getting them from CE. In post #29, they re-shipped a proper one.