vext01 Posted July 21, 2015 Share Posted July 21, 2015 (edited) Hey, First post! Hi! Picked up an untested 520 STfm today. I have been testing it to see if it all works (it's had a hard life). I *think* the system is all working, but I am having issues with the mouse. Hoping someone can confirm: * Mouse is a technoplus amiga/st mouse (there is a switch to choose). * When plugged in and set to ST mode, pointer only moves left. * If you plug in a joystick into the mouse port, and rapidly tap a direction, pointer can be moved in any direction (suggests port on ST is ok). * Keyboard shortcuts for mouse work fine. * Continuity tested all wires from mouse to ST port, seems fine. * Spinning wheels inside mouse manually, same result, only moves pointer left. * Removing wheels and repeatedly breaking the light in the wheel recesses allows me to move pointer in any direction. So I think the ST is fine, but there is something wrong with the "light wheel" mechanisms in the mouse. I tried IPA alcohol on the gate sensors, no joy. I think perhaps the logic in the controller chip has corrupted. There are no caps for there to fail. Any thoughts? Cheers. EDIT. The gates themselves have a red side and a blue side. Presumably one side is supposed to emit light, whilst the other detects light? If this is the case, neither side of the gates is lit, so perhaps that is the issue. Speculation though.... Edited July 21, 2015 by vext01 Quote Link to comment Share on other sites More sharing options...
exxosuk Posted July 21, 2015 Share Posted July 21, 2015 Sounds like a bad wire in the mouse, I would bend the cable at various angles, even the plug end on the ST to see if it works or not. Or try another mouse.. Also a generic ST does not support the scroll wheel on the mouse. Quote Link to comment Share on other sites More sharing options...
vext01 Posted July 21, 2015 Author Share Posted July 21, 2015 I'm not convinced that's the issue. I can move the pointer via the mouse by quickly breaking the light gate with (e.g.) a small piece of paper. I've also continuity tested the connections with a multi-meter. Quote Link to comment Share on other sites More sharing options...
exxosuk Posted July 21, 2015 Share Posted July 21, 2015 if the optos are working then there isn't much left, either the opto wheel is broken /stuck /dirty, or the ball and/or guide are not driving the wheel. Or optos are not aligned to the holes in the wheels correctly. Quote Link to comment Share on other sites More sharing options...
David Baldwin Posted July 22, 2015 Share Posted July 22, 2015 You might have to do some soldering in the keyboard the pins were you plug the mouse into may be broken. Take the top of or see if it wiggles with the mouse plug in the Keyboard I had to solder my 520ste keyboard it was doing the samething. David B Quote Link to comment Share on other sites More sharing options...
exxosuk Posted July 22, 2015 Share Posted July 22, 2015 The ports going is common http://www.exxoshost.co.uk/atari/last/keyboard/index.htm Though he says it works if he pulses the opto, so sounds like a ball related problem. He does not say if turning the opto wheel works or not. Quote Link to comment Share on other sites More sharing options...
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