I got a portable broadcast Sony U-matic VTR (BVU-110) that seems to have developed a drum servo issue - the tape plays at the correct speed since the audio is OK but the picture is rolling. If I hit PAUSE I get a color still frame. I know the heads are good because it played fine when I first got it. I managed to get the NTSC service manual in print form, but I'm wondering where I should start. Look at the PG signals from the drum motor? I don't think it's a video problem but it could be. But I think it's drum servo. The drum looks like it's spinning at 1800RPM though.
What scope do you have? I have an Iwatsu SS-5710 which is a pretty good scope, but I'm thinking about selling it and buying a Tektronix 2246 or similar.
@@nowt1002 Thanks. I like how it displays the volts per division and the time per division on the CRT display. I also bought a LCR T7 and it seems to work well, I took a 47uF capacitor out of an old Mitsubishi S-VHS VCR that I scrapped the boards out for soldering practice, and the capacitor measured as about 49uF on the LCR T7. Also, what temperature do you use for soldering? I am using a 600F tip now after I had issues with a 700F tip ripping solder pads.
