Search found 6 matches

by TheMightyMadman
Thu Mar 28, 2024 10:19 pm
Forum: Hardware
Topic: TM-01 Vertical Deflection Issues
Replies: 8
Views: 3198

Re: TM-01 Vertical Deflection Issues

Well done Adam in getting your monitor very nearly perfect. For issue #1, is the problem the frame retrace not blanking? See http://easkcom.blogspot.com/2012/05/why-tv-retrace-lines-occur.html for descriptions of the problem. Can then look for possible causes. Regards, John Thanks John :D I'm sorry...
by TheMightyMadman
Fri Mar 08, 2024 10:48 pm
Forum: Hardware
Topic: TM-01 Vertical Deflection Issues
Replies: 8
Views: 3198

Re: TM-01 Vertical Deflection Issues

Well done Adam in getting your monitor very nearly perfect. For issue #1, is the problem the frame retrace not blanking? See http://easkcom.blogspot.com/2012/05/why-tv-retrace-lines-occur.html for descriptions of the problem. Can then look for possible causes. Regards, John Thanks John :D I'm sorry...
by TheMightyMadman
Tue Dec 05, 2023 11:10 pm
Forum: Hardware
Topic: TM-01 Vertical Deflection Issues
Replies: 8
Views: 3198

Re: TM-01 Vertical Deflection Issues

I've managed to fix the vertical deflection issue - several potentiometers were dirty/bad, primarily the height potentiometer, and there were a lot of bad solder joints on the mainboard, particularly on the larger power resistors. So, I now get a recognisable image with the full height of the displ...
by TheMightyMadman
Tue Dec 05, 2023 11:07 pm
Forum: Hardware
Topic: TM-01 Vertical Deflection Issues
Replies: 8
Views: 3198

Re: TM-01 Vertical Deflection Issues

Hi all, I'm making some slow but sure progress! :D I've managed to fix the vertical deflection issue - several potentiometers were dirty/bad, primarily the height potentiometer, and there were a lot of bad solder joints on the mainboard, particularly on the larger power resistors. So, I now get a re...
by TheMightyMadman
Wed Oct 18, 2023 8:35 pm
Forum: Hardware
Topic: TM-01 Vertical Deflection Issues
Replies: 8
Views: 3198

Re: TM-01 Vertical Deflection Issues

I’ve got one of these with a vertical collapse but it’s been on the back burner for a good while now. I did similar steps to you but I never did get to the bottom of it, I was a bit concerned there was corrosion in the yoke but I need to take apart a worker to compare. I really should get it out an...
by TheMightyMadman
Sun Oct 08, 2023 5:28 pm
Forum: Hardware
Topic: TM-01 Vertical Deflection Issues
Replies: 8
Views: 3198

TM-01 Vertical Deflection Issues

Hi all, I've got a Tatung Einstein TC-01 and a matching TM-01 CRT display in for repair - the computer was a black screen fault which I've repaired (bad system RAM), and the display has vertical deflection issues - see pictures below. IMG_2898.JPG IMG_4783.JPG Someone else has tried to repair the di...