Rockola 1465 selection problems

[marcol]

Hello

I’m working on a 1465 right now that has some selection problems. I’m currently busy cleaning the whole selector drum. I have disassembled the whole drum and cleaned everything. Still waiting on a can of graphit to redo the contact sides.

I will try and i think this was the problem but i also read somewhere that it’s possible to modify the power supply to get a little more voltage to the coils ? I like to get some more information about that and how to do it. Just if this doesn’t help..

I measured every coil and all are still good.

Tnx

[jukenorman]

Hi Marco,
I'm not aware of a modification for more voltage but increasing the capacitor size would give a fatter pulse. However, that may not be your problem - there is a 1475 thread here that is worth going through, similar issue, similar operation.
jukeboxaddicts.proboards.com/thread/3243/tempo-1475-selections-write-issue

Norman.

[marcol]

Oct 15, 2024 8:36:44 GMT jukenorman said:

Hi Marco,
I'm not aware of a modification for more voltage but increasing the capacitor size would give a fatter pulse. However, that may not be your problem - there is a 1475 thread here that is worth going through, similar issue, similar operation.
jukeboxaddicts.proboards.com/thread/3243/tempo-1475-selections-write-issue

Norman.

Well most of the selections work but some seem sticky(pins) even after cleaning. I disassembled everything again to clean it again and now still waiting for the can of graphite to arrive to apply to the contact strips.

I read somewhere it was possible to modify something(don’t know what) to get a little more voltage or current to get a little more power to attract the pins. Don’t know anymore where a read that

[marcol]

ah.. here it is:

jukeboxaddicts.proboards.com/thread/336/rock-ola-1478-darn-pinbank

But then i couldn’t find it on the forum