Robotron U/R with multiple issues
Just picked a U/R from a local seller who gave up on it - he said the boards had been serviced and the monitor was fine, probably a problem with the power supply. Ok, it was cheap and I'm trying to learn as well as have fun...
Got it home, plugged it in - got video, sound, and play! Aside from automatically moving right and not being able to go left, it seemed to play as i remembered.
Looking around and powering up/down, i see someone put in another PS (switching?) for the +5v and the LED1 does not light on the original board. And some wires are now soldered to the original PS board (connectors cut into pieces)
Checking the wiring of the movement joystick shows nothing abnormal, test screen has 'move right' on constantly. Disconnnecting the connector from the CP doesn't change this. Disconnecting 3P2/3 does not change it either.
A few times I have seen startup rom errors - mostly #12, but once #6, but after restart, everything plays as before.
And, the sound test repeatedly plays Sound Line 1, but none of the others - the test button on the sound board cycles through many different sounds.
So I plan to remove the new PS, and get the original board rebuilt. I think that can't help but improve the stability of rest of the system.
Anyone have suggestions on the joystick or sound issues?
thanks!
John
Just picked a U/R from a local seller who gave up on it - he said the boards had been serviced and the monitor was fine, probably a problem with the power supply. Ok, it was cheap and I'm trying to learn as well as have fun...
Got it home, plugged it in - got video, sound, and play! Aside from automatically moving right and not being able to go left, it seemed to play as i remembered.
Looking around and powering up/down, i see someone put in another PS (switching?) for the +5v and the LED1 does not light on the original board. And some wires are now soldered to the original PS board (connectors cut into pieces)
Checking the wiring of the movement joystick shows nothing abnormal, test screen has 'move right' on constantly. Disconnnecting the connector from the CP doesn't change this. Disconnecting 3P2/3 does not change it either.
A few times I have seen startup rom errors - mostly #12, but once #6, but after restart, everything plays as before.
And, the sound test repeatedly plays Sound Line 1, but none of the others - the test button on the sound board cycles through many different sounds.
So I plan to remove the new PS, and get the original board rebuilt. I think that can't help but improve the stability of rest of the system.
Anyone have suggestions on the joystick or sound issues?
thanks!
John
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