dosy schematic

[intercepter]

i have a dosy (tc-4002-sw)need a schematic,mod doesnt work at all.everything else works good.thanks

 

[Bionic Chicken]

Check D3 and D4. One or both are probably bad. This happens when the Modulation meter is used while operating an amplifier. It cannot handle checking modulation with power applied......only a radio.

 

[intercepter]

check them in meter or remove them.in the meter they are open in both directions.

 

[Bionic Chicken]

In or out of circuit if they read open in both directions they are bad.

 

[intercepter]

was using ohm setting on meter.now on the diode setting all is ok but d9,it shows 0's in both directions.