On the KLM-367a clone board the MG Vpp adjustment has been now successful. (problem was with R56 that was 0,125W in staid of 0,250W )
But the MG frequency adjustment is still not good.
Service manual suggest to replace R52 if 50hz can not be obtained. Results are almost the same using new LM13700 or the LM13600 from the original KLM board.
-The most faster frequency i can get is around 8hz with a 12.1K resistor on R52 ( originally R52 is 150ohm ! ).
-If i replace R52 with a 15K it stop oscillating.
So, should i find a resistor between 15K and 12.1K to obtain a 50hz frequency?
or
Do you thing there is a problem elsewhere in the MG circuitry where i should look at?
I hope that someone could help me.
Thanks.