Picked up a HR2510, display lights, all controls work. However very low RX an no TX, close stations can barely be understood. I attempted to do an alignment, but couldn't get PLL aligned. Voltages at IC312,311 are in check. Voltage at voltage regulator is correct per specs. Anyone know where I could look?
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Another HR2510 problem
- Thread starter Crasher
- Start date
You did remember to change the frequency to the correct one in the service manual when aligning the PLL? I forgot to when I did one and left it on 28.000 MHz you did the first two steps on and couldn't get the voltage correct at all and then when I realised my mistake and changed it to 29.6999 it all aligned up just fine.
It wouldn't even align at the first step (28.000mhz). Freq is 6.16000, needs to be 6.2000, l315 wouldn't align that far.
if it is not bad look at the others in the circuit. just happen to remember my lincoln did this years ago and drove me nuts trying to find what was wrong. it had very low receive and no TX. had to go out and hunt my notes down on this. have a few others items I checked back then to find this cap bad.
Every one of these that come in always have bad caps on the control board.
The bad thing is they leak and sometimes eat the copper foil away. Inspect those areas closely.
The bad thing is they leak and sometimes eat the copper foil away. Inspect those areas closely.
So I spent about 3 hours on the radio last night, PLL is aligned perfect until I hit a snag at, since it won't tx I couldn't align the last part of the PLL alignment. The TX icon shows up in the display, just nothing happens. I hear static in RX but that is all. Still no RX or TX...
I have a 2510 on the bench right now. Exact same problem. Low RX. No TX output but up front it looks good. Have not got around to check alignments but checking voltages on the output PA section and all looks good. I was going to pull the MRF477 but I'll take a quick look a c60 first.
