Mark V






Mark V Power Supply Problem

Problem: After putting up new beam, my MK V starting cutting in and out. I  turned it off and let it rest and tried again; same results. I noticed  the power supply  power light, turning on and then dimming off. It has been hot in the shack, so I tried it last night in cooler weather and it did the same thing right during a PSK QSO.  I did find the schematic on the net, but will see what comments I get before tearing into it. 
Jim, K6UUW

Solution: I had a similar problem. Exactly as you described it would dim the power supply. It was one of the Power Amps in the Mark V that went.  Try disconnecting the supply from the Mark V and see if the supply light goes back to normal if it does it will be fine, if not more than likely the PA has died. Stu MM0BSM



This site was last updated 08/27/07