sweetbeats's latest activity
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.And yeah okay I think if it was me I’d dismount the main power transformer, fuse PCB, and that sensor PCB mounted to the back of the... -
sweetbeats replied to the thread Tascam 34 - meters doing strange things.I wasn’t saying looking on the Mouser or Digikey website for cross-reference. Get old-school and call them…or open a live chat...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Thanks. I appreciate it. “Algorithmic Overlord”…lol Can you post a pic or some pics of what you are looking at as far as extracting...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.I need to revise my direction…transistors CAN be tested in circuit, I have just avoided doing it because I don’t trust the accuracy of...
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sweetbeats reacted to frnkfrkl's post in the thread Tascam 34 - meters doing strange things with
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Yes, had planned it that way. -
sweetbeats replied to the thread Tascam 34 - meters doing strange things.Transistors have to be tested out of circuit When you pull the PCB assembly, do it after it’s been unplugged and switched off...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.So just because the voltage doesn’t seem correct at the base of Q801 does not necessarily mean Q801 is the cause of the fault. But it’s...
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sweetbeats reacted to frnkfrkl's post in the thread Tascam 34 - meters doing strange things with Like.
I did exactly as you asked. I just confirmed by looking at the spec sheet for a 2CS1645B that base was indeed on the side. I'm...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.So you measured from pin 2 of J171 to pin 1 of Q801, which is the pin closest to the edge of the power supply PCB? I just want to make...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Measure for DC volts between J171 pin 2 and the base of transistor Q801. The base pin is the first one, the one closest to the edge of...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.600mV is very not right for pin 3 after startup. Yes, reference to pin 2 for ground is correct. Did you get that measurement with...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Too many posts. I can’t keep up with the blasts. Please let’s take things one step at a time.
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Think about this…how can it be the heads, or only the heads? You connected a source to an input and got nothing at the output. No heads...
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Turn on the 34B. Give it a few seconds, and then measure for DC volts at pin 3 of J171. What do you get?
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.You’ve got your hands full and I’m not sure if I’m going to be able to help. Again if it is global then it has to be something high up...