BX645A - follow up (Techniek Radio/TV)

door Pandu Rajan , 20.09.2024, 10:34 (62 dagen geleden)

Dear Mr Sieme

You were king enough to explain to me the working of the motorized band switch for the above set. As the set was under restoration I had not powered it ON. Recently I have completed the restoration and checked the voltages with all the valves in position. Then I decided to check the working of the motorized band switch. I carried out the following checks:

1. The band switch adjusted correctly to KW2a position.
2. Removed the EZ80 valve so that no HT to all the valves.
3. Released all the 6 switches of the 6 bands.
4. Fitted Z1 fuse.
5. Switched ON the power.
6. The motor runs continuously in forward and reverse direction without stopping. It should stop in part of the one revolution of the motor.
7. I checked Switch S7 and is always ON. Is this the reason for the continuous operation?
8. What Next I should do?

Regards
P.Rajan