Main > Monitor/Video Forum
Second MS8-29
cruzlink2:
Yes it was on 15khz chassis was working for a whole year before it did this suddenly, I recapped and reflowed the entire thing because it would have this scrambled image for a while then no image. After the recap reflow and swapping 3 of the small transistors in the B+ area it would stay on but the image remained the same. Like you said I also took off the sync module and all the transistors there tested fine, I wonder if like you they are failing under load. Do you have the model # of the transistors by any chance? I would not mind replacing them all. I am also thinking of replacing the HOT and bit Regulator to be safe. Thanks for your help.
grantspain:
nothing to do with HOT and regulator
if you have another ms8-29 swap the sync module to prove
cruzlink2:
The first chassis I got working is in use at the arcade so I didn't want to pull out it's sync module to try this out, I finally got some replacement transistors that were equivalent to the originals and installed them.
I will try the chassis hopefully next week on a slow day at the arcade, hoping this is it.
buttersoft:
that's an interesting approach! If it works, i'm sure people will be interested in the specs.
cruzlink2:
Updating this finally, not only did I replace the transistors on the Hsync board but also the HA11423 just in case. Linked a video of the chassis after the fix.
https://youtube.com/shorts/tDMeg_DwU_E?feature=share
Navigation
[0] Message Index
[*] Previous page
Go to full version