Jry,

Thanks! As it turns out you were right on the money. 2 bad caps inside the DC/DC converter took care of the problem. I went ahead and replaced the others as well.

Darrell

Hello all, Been a long time since I have been on this site. I recently acquired a virgin early 1200. ( 5000 range SN, 1.4 ver firmware ). It has recently developed a problem. When you turn it on the display will come up "step 00 hz" and will be locked in that position. If I turn the scope ...

On/off switch problem now repaired, turned out to be a leaky 120 uf / 50v electrolytic in the power supply module. Now on to replacing all the rest of the caps .....

Jry, Thanks for your response and advice! This unit was actually a fellow hams pride and joy for quite a few years, I received it after he passed away. When I apply 12V to the rear the "applied" light is on in the front but the unit won't power up. It will power up from the rear switch wit...

I managed to find the baseband tray ( cable laying on top of the label ) and found several leaky caps ...will replace them all. Still wondering why only 5V on the battery wires.

Darrell / W6VHK

I recently was given a very nice IFR Com 120A and an looking for a little guidance if someone would be so kind! Sometimes the front power button works fine, sometimes it won't and if I press it the srceen freezes and I need to turn it off from the rear. Other times when in either receive of gen mode...

Having never taken one of these apart before, what kind of a job is it to access the front keyboard?

To be a bit more specific now that I have tried it a bit more ... If I turn the unit on from the back switch it will power up and stay in the self test mode ... I can then push any one of the front buttons, rec, gen, etc...and the unit seems to work fine. If at any time I push the "power" ...

Hello all ... I was recently given a IFR Com 120A that seems to be in very nice shape but the power button up front will not turn the unit on or off ( I need to use the rear switch ). Also, after the self test it gives the message "rf term overheat, reduce rf input" although I have no rf g...

Hello all ... I was recently given a IFR Com 120A that seems to be in very nice shape but the power button up front will not turn the unit on or off ( I need to use the rear switch ). Also, after the self test it gives the message "rf term overheat, reduce rf input" although I have no rf g...