sweetbeats's latest activity
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sweetbeats replied to the thread Tascam 34 - meters doing strange things.Personally I would not suspect or have concern with D805 and D806. I mean, you can test them, but this is a relatively low voltage low... -
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...
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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?