In this case, I believe the power output transistor is shorted, The .1W output shows the exciter transistor may be OK. Locate and remove the power output transistor, find it's replacement thru an NTE catalog, and order it (maybe you want to order two, in case you mess the first one up). Resolder the replacement transistor the exact way you saw the original soldered, as sometimes they use the solder itself to transfer the heat generated by the power output transistor to the heat sink ( or what there is of one if your radio is a handy-talky). Use an ESD wristband, and ground it to the metal case, or the circuit board's ground plane. This will eliminate you destroying any static sensitive devices on the circuit board, causing worse damage than when you started the repair. Good Luck,
Longshorts.
I bought a headset for my Rino 120. Once I plugged it in (then removed the plug) the speaker never...
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I bought a headset for my Rino 120. Once I plugged it in (then removed the plug) the speaker never worked again. It seems the speaker-disable pin on the headphone jack has been bent. I tried to disassemble it (removed obvious screws) but it won't come apart. Is there a trick for removing the cover. I'd like to bend the speaker cut-off switch/pin back so that I can use the unit again. Everything else works fine.
uh064sx When I push the PTT key and continually get a squealing sound and I can't work out how to...
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uh064sx When I push the PTT key and continually get a squealing sound and I can't work out how to stop it. Help!!!