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Heute, 12:49 Uhr
RetroNora
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Hello,
I have bought Robotron A7100 with Alpha 1 monitor. There is an issue with power supply board inside the monitor (burnt cement resistor near the main filer cap). With the picture processing board powered from bench PSU it seems there are no destructive issues with the monitor. There is heating and HV at 11.9 kV. Even with the brightness knob turned to maximum there is no raster visible on the monitor. I guess it has to be supplied with proper video signal from the computer. Although my A7100 seems to power on fine it gives no video output (no signals on the video connector as well).
Does anyone has any schematics for the monitor? Although the value is visible on the cement resistor I'd like to verify other parts values.
Greetings
Dieser Beitrag wurde am 05.09.2025 um 12:51 Uhr von RetroNora editiert. |
