Hmm, forget my reply also. Although with those TSR1's, and even later units, a ground jumper can't hurt.
On 12/23/2024 7:21 AM, M De Simone via Jukebox-list wrote:
Tony, Thanks for the reply, I didn’t go in that direction because the selections work fine when made from the buttons on the machine. Could it still be a ground if the selection buttons on the machine don’t behave the same way? Mauro
Sent from my iPhone
On Dec 23, 2024, at 6:37 AM, Tony Miklos via Jukebox-list jukebox-list@lists.netlojix.com wrote:
On 12/22/2024 6:49 PM, M De Simone via Jukebox-list wrote: Today I went (as promised) to a friends place to see if I could get his wallbox working again and spent much time with some success, the previously rebuilt TSR1 and stepper is working now but seems to pick up all numbers in a particular letter group. For example selecting L4 will play all L selections. It also trips immediately when a selection is made. It was getting late in the afternoon and I couldn’t figure it out so left it until I could get some advice. So here I am, What would cause this issue? Thank you, Mauro
That sounds like a poor ground between the pulse amplifier and the tormat unit. Usually at the RCA jack on the selection receivers pulse amplifier. Normally cleaning the RCA jack and socket will fix it, but if not, you can add a wire from the ground on the selection receiver (use existing screws) to the tormat unit.
I just noticed you said a "TSR1". They can be problematic but it still sounds like a poor ground.
Tony Miklos