Member Since 24 Dec 2007
Offline Last Active Yesterday, 10:53 PM

Topics I've Started

Macrotech 2402 with uncommon problem

24 November 2015 - 09:38 PM

    I have repaired hundreds of Macrotech amps I have never encountered a problem like this.
I am presently working on a 2402. Amp woks fine for a few minutes then the signal on both chs would
stop at the same time. The low v supply remains normal.The problem is on the main board because
I tried another main board.
Does anyone have any suggestions?

Crown 5002 Bias

30 July 2015 - 08:53 AM

    I am working a 5002. The low side bias cannot be adjusted below .370.  I had changed the outputs with On Mj21196. I have use these in many Crown 5002. I have checked the obvious. Trimmer, changed bias tr, and surrounding diodes. Checked for corrosion etc. still nothing.
Any suggestions.