Peale
Active member
I have this Hantarex MTC0-900 that has just been kicking my butt. I worked on it over a year ago and put it away because it frustrated me so much. I had to dig it out of storage the other day, so I thought I'd get back to it.
Backstory: it used to display nothing except a full-on bright raster with no picture. After recapping and going over solder joints, now I can adjust the coarse brightness with the screen control, but can not do anything with the contrast or brightness controls.
I contacted Jomac about this, and he gave me a couple test points to see if I had voltage there.
@ SP5 and 8, tested together, I should get ~12VDC. I get nearly zip. If I meter from the heatsink on IC4 to SP8 I get 12VDC, like I should.
I have a thread @ BYOAC with my prior experience, but this thing has me beating my head against a wall. Any other pointers?
http://forum.arcadecontrols.com/index.php?topic=80194.0
Backstory: it used to display nothing except a full-on bright raster with no picture. After recapping and going over solder joints, now I can adjust the coarse brightness with the screen control, but can not do anything with the contrast or brightness controls.
I contacted Jomac about this, and he gave me a couple test points to see if I had voltage there.
@ SP5 and 8, tested together, I should get ~12VDC. I get nearly zip. If I meter from the heatsink on IC4 to SP8 I get 12VDC, like I should.
I have a thread @ BYOAC with my prior experience, but this thing has me beating my head against a wall. Any other pointers?
http://forum.arcadecontrols.com/index.php?topic=80194.0