sweetbeats's latest activity
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No, don't beat yourself up about getting lost on a PCB! Happens to the best of us. Once Upon a Time, GOOD quality kit had the component... -
sweetbeats replied to the thread Tascam 34 - meters doing strange things.Ahhh okay. So, no shame…sometimes ‘1’ is printed on the PCB, or sometimes you can find a ‘1’ on the connector housing noting pin 1.
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sweetbeats replied to the thread Tascam 38 R+P Card Potentiometer Problems.That all makes sense FWIW. And yes…I think it’s very beneficial to have a spare machine. I even called it one of the most underrated...
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sweetbeats replied to the thread Tascam M-308B, M-312B, M-320B PARTS!.I wouldn’t get hung up on the power supply assembly part numbers. Those numbers change during the course of production and not all the...
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sweetbeats replied to the thread Tascam M-308B, M-312B, M-320B PARTS!.Sure do. Which style? The low-profile yellow zinc plated, or the tall chrome early “K fader” style? I have both.
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Can you verify your meter make and model is Tougs M103? I can’t find anything like that…was trying to find the manual or at least...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Yes they are all mounted to the Power Supply PCB. And it depends on the caps. There are computer grade screw-terminal caps in my Ampex...
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Sorry, one last thing. The machine had been in storage since about 1999. I had loaned it to a friend and have no idea where it was... -
Discrete voltage regulator circuits vary a bit but most of them use a series power device and there must be a voltage reference...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Okay. Yeah something is not right for sure if both sides are running around 6V. That’s with J171 unplugged from the motherboard? Yes...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.“Yeah, 6V.” 6V where? I keep repeating the question…between pins 9&11 or 10&11 of J171? Or both? Caps and diodes don’t regulate the...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.6V where? Between pins 9&11 or pins 10&11, or both? Is it still 6V? The audio chain will function at 6V, but that doesn’t mean it’s...
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sweetbeats replied to the thread Tascam 38 R+P Card Potentiometer Problems.I read the manual. So the tip temp is fixed at about 900 degrees. That’s too hot IMO. So, again, if you’re going to continue using that...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Look at page 82 of the service manual linked above…that’s exploded view 4. Looks like the power supply PCB is horizontally mounted below...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Um, no? 106 pages? Full service instructions, theory of operation, exploded views, PCB layouts, schematics…it’s the full operation and...