So I posted a thread with this question and it's gotten 29 views but no responses - thought maybe I should be posting it in here instead. If anyone can help, replying to either is fine by me - I hope I didn't waste a thread with the question!
Hey all..
I have a Toshiba TIMM MM20E45 that was gifted to me by a friend and I wanted to use it since it supports so many formats. The problem is.. the vertical deflection is shot. Very rarely, I can get the monitor to display an image before collapsing into a single horizontal line. I looked up the service manual here:
https://www.manualslib.com/manual/71277 ... =45#manual and found the section on the vertical deflection circuit. I checked the area on the chassis but did not see any bulging capacitors or anything, so after watching a few YouTube videos I saw a method of restoring the image by replacing the vertical deflection IC. After looking in the service manual, I saw this diagram:
I assumed it was IC301 that needed to be replaced (the TA8427K). I replaced it and I still have the same problem. I am just now rereading this manual and wondering if the other chip, IC302 (TA8859AP), was what really needed to be replaced. According to the manual it is the vertical deflection sawtooth wave generator and amplifier. Before I delve any deeper into this, I wanted to reach out and see if anyone had any helping advice. I can take a picture of the area of the PCB where these chips are located when I get a chance.
Thanks