14-02-2020, 03:02 PM
The remaining monitor, one of the 2 that had been in a very damp place, was a ragbag of problems. Got a picture on it for long enough to see that the CRT was good. I'm treating it as a parts donor.
Got a buck transformer running on the bench now. An RS potted 12+12 20VA toroid. Takes my 238V mains down to about 213V. Monitor runs much cooler. Toroid just dumped in bottom of case, quite close to CRT, but no visible positional hum.
Got a buck transformer running on the bench now. An RS potted 12+12 20VA toroid. Takes my 238V mains down to about 213V. Monitor runs much cooler. Toroid just dumped in bottom of case, quite close to CRT, but no visible positional hum.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
