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Old 23rd Mar 2018, 5:02 pm   #3
cmjones01
Nonode
 
Join Date: Oct 2008
Location: Warsaw, Poland and Cambridge, UK
Posts: 2,669
Default Re: Microvitec Cub 1431 Power but no picture.

There are lots of things which can go wrong with a CRT monitor, and the tube is very unlikely to be the cause of the problem. Generally there's no need to discharge the EHT because there's no way to come in to contact with it unless you deliberately disconnect the anode cap from the CRT, which is probably not necessary.

To find out why the monitor isn't working, you need to do some basic voltage checks to see whether the power supply and timebases are working. These do involve measuring voltages up to several hundred volts, which can be dangerous. How confident are you working with electronics, and can you use a multimeter?

Chris
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