开云体育

Hello I have a 2712 that i picked up “parts only” on eBay. I replaced the two button cells and it works well aside from failing two Amplitude Normalizations.

BW Filter Ampltd (Lin) FAIL
Preamp & Det Gain FAIL

Wondering if anyone can point me in the right direction so I can fix it.

Hello Trevor,
Sorry for the late reply.
I would first start with allignment of the 3kHz, 30kHz and 300kHz filters in the VR Module explained in the Service Manual. The trim capacitors get bad contact over time. I've written earlier on this issue. Left click on my name above this message and search for 2712. You will find more info there.
Good luck.
I will be glad helping you futher for as far as I can.
Jaap PA0JRK