The PA failure was probably related to a problem starting in the Harmonic Filter section, especially if you have the early version PA.
Pop the cover off the harmonic filter section... chances are you have some issues there. cheers, skipp skipp025 at yahoo.com > "D" <[EMAIL PROTECTED]> wrote: > > Hello ALL, > > I have a motorola msr 2000 VHF that one of the finals had charred a bit of the board and a few resistors had come loose. This i noticed after a problem I encountered today..which was > > Just put the repeater back on the air and was tuning up the new set of duplexers, got them all tuned and when i fired the repeater up I head a crackle noise very faint when it would ID ,, so I keyed a radio to see how the repeater heard more and while listing to the speaker on my r2600 I heard more major noise (sounding like a loose connector causing so i changed all cable with new one and still no luck ) I did not think it come from my transmitter it was working great that morning. so little more testing and a little more after that I just could not pin point the problem. I removed all cables from repeater and put the amp out of the picture.. than I used the local PTT and listened nothing , so i waiting thinking what Next,, keyed the TX again and there was the noise..So i took the exciter output in the service monitor and it was clean no noise at all looked on the monitor and there was no movement in rf at all when the PA was hooked up ..stayed at 50 watts on the meter..not thinking this is noise come from the amp.. but i opened it up and what a mess inside I saw. resistor loose and solder melted all over.....has anybody ever come across this are the msr2000 PA notorious for tearing up..??? > > I was in need of a good PA so i looked at a few vhf mitreks i had with 100w PA's and the looked exact except for the power control setup.. > > the msr has the power control and all in the front of the amp..with less components on the rf deck.. IF I remove the components from the miter and set up them like the MSR This should work am thinking..?? Has anybody replaced the PA with the mitrek mobile with ease..??????? power out put is clean on the msr amp but nothing left in place to solder to to fix and rely on the msr deck so I would like to replace it ..any help suggestions etc. would be great.. > > Thanks > D >
