Recent content by ecs787s

Hey Guys, I have a Tascam 48 that I just modified. The Record Amp cards have all new electrolytics for the power supply rails and Nichicon Muse ES between signal stages. LME49720 and LME49860s have replaced all the op amps except for the VU meter amps. .1uF decoupling caps have been added from...

What I think has happened is that I have a later model 48 and all of my manual/specs/schematics don't reflect the actual hardware I have. Here is the full blueprint of the Control PCB. The real hardware has several more ICs on it as you can see.

Upon further investigation, I've found that my model of Control PCB is totally different than that of the blueprint in the manual... in fact the resistor parts in the manual only go up to R183, while its completely visible by this image that I have an R186... I'm thinking there is no longer an...

Here's the condition of the unit... dim Spooling LED when in "Spooling" mode and dim Record LED when in "Recording" mode. The Stop and Edit Button LEDs don't even turn on ever. Its hard to tell from the photos but both of these LEDs are about half as bright as the others of the same color on...

Ok, after a couple years of not messing with this issue, I've decided to get my butt back in action to finally figure this issue out! I've measured R41-R43 and all check out fine. R44 on the other hand cannot be found!!! I've attached the schematics and a couple of photos of the Control PCB. I...

Hey Guys, I'm trying to figure out an issue I'm having with my M-312B board. When I pass a signal through any of channels 3-6, they cut out by tapping on any of the lower buttons(closer to operator) such as the bus select or fader buttons. If I start by passing a signal through and they are...

Hi all, Upon fixing the remote connection at the back of my Tascam 48, I accidentally touched some other open leads to the chassis and had a spark. Since, I've noticed that the REC and SPOOLING LEDs are about half lit and the EDIT LED doesn't even turn on! All other features seem to work fine...

Hello there, this is my first post on this site. I’ve been using it for info over the last few months and have found it to be a great resource. I’m currently stumped right now as to what I did to my Tascam 48 8-track. I bought it in relatively good condition and have had the rollers rerubbered...