Garyb Posted November 28, 2020 Share Posted November 28, 2020 Hi, Just bought a SM144 for my ST only to find that the screen isn't working. There is something rolling on the screen but it's not correct. Med and Low res are working fine, and I know the 144 has been working before. Coupled with the rolling screen, the speaker is giving a constant whine but not sure if that is connected. Any ideas? Quote Link to comment Share on other sites More sharing options...
zzip Posted November 30, 2020 Share Posted November 30, 2020 On 11/28/2020 at 6:19 PM, Garyb said: Hi, Just bought a SM144 for my ST only to find that the screen isn't working. There is something rolling on the screen but it's not correct. Med and Low res are working fine, and I know the 144 has been working before. Coupled with the rolling screen, the speaker is giving a constant whine but not sure if that is connected. Any ideas? Aren't there horizontal/vertical hold/size controls in the back? Do adjusting these help? Other than that, I don't know. I did find the service manual here: https://oldcrap.org/2019/11/23/atari-sm144-monitor/#jp-carousel-6316 Quote Link to comment Share on other sites More sharing options...
calimero Posted December 2, 2020 Share Posted December 2, 2020 whine is probably connected to the rolling problem... If I remember correctly, I had same problem on Commodore 1084 before High Voltage Flyback Transformer died... Quote Link to comment Share on other sites More sharing options...
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