[Amps] Trouble with AMP Supply LK500ZC...

[(Karl-Heinz) - DL2FAG]

Hello, 

I have some trouble with my LK 500ZC. A couple of weeks ago I recognized the first problem, that I had no output from the  the amplifier on the 10, 15 and 20m position. 40 and 80 (160mtr can not test, no antenna)  was ok. 
When I was looking into the schematic, I tought, it could be a mechanical problem maybe on the switch or on the wires at one of the coils. But I could not find any specific problem on this parts. After a while I was trying again and now I have the additional trouble on 40 and 80 m. 
The indications are, that the instruments shows the "normal" currents, but I do not have any output on the powermeter. 

Does anybody on the reflector has some experience with the LK500ZC or has already a similar problem. Could it be a problem on the Input-filter board (ATI-6)? 

I have never done any repair before  on an RF-amplifier so any info/help is really welcome.  
Maybe does anywhere exist a kind of FAQ about he LK500 ?

73 de

Karl

DL2FAG/PY4ZAB


http://www.qsl.net/dl2fag