The unit was sitting normal. This morning I've redone the measurements with the unit sitting normal and upside down. Like yesterday when it was...
To clarify: when is upside down, the R channel is not always correctly set on the REC level (it's almost always better than when I record...
I've followed the procedure for testing the bias as shown on the service manual (recorded at -5db 300Hz, 1kHz and 10kHz and then measure the AC...
I've done the measurements and at pin 16 in different positions and, every time, the mV is around 510mV both for IC401 and IC501 (11/12mV...
The voltages I gave you earlier were DC. Now I've measured in AC, pin 7 (7mV), 11 (16mV) and 14 (18mv) were identical between IC401 and IC501,...
So, I’ve done a little more research IC401/501 should not be dead. The problem is that I do not have voltate on pin 16, I’ve checked some...
I've done the measurements on IC401 and IC501 on all pins. I've obtained the same measurements on both of them. Here's the measurements: 1 -7,12V...
For the PB it is quite ok but, when I adjust the PB trimpots (using a test tape at 400hz and measuring the output with a resistance of 47kohm with...
I've done some digging and: - the azimuth was off (the rec has not improved and the same behavior while recording upside-down is still present);...
Tomorrow I'll try to check the levels as you suggested. In the meantime I'll add some info: this morning I've opened and cleaned the PB/REC...
Here some photos, maybe they can help. (The switch have been sprayed again with deoxy after I took the photo)
I have a multimeter TRMS, but honestly I don't know where to start looking on the circuit. I've cleaned the internal calibration trimpots (RV502...
Hi! I've finally bought a SONY TC-D5M in excellent aesthetics conditions at a resealable price. I've changed its belts and everything is working...
The ferric chloride arrived this morning AND IT WORKED LIKE MAGIC!! It’s something really incredible that an easy work like this completely fixed...
That’s my worst nightmare, I found that thread before starting this one and the work to replace the clutch looks very complicated and involved, I...
The shaft was, in fact, a little pushed down, I lifted it but, like you said, the problem isn’t resolved. I’ll update once the ferric chloride...
In a couple of cases it happened that the take up spool completely stoped causing the tape to be chewed up by the pinch roller. I’ll wait for...
I've tried to clean up the mechanism and oil it and I think I may have found the origin of the problem: the play idler tyre. it moves with high...
Okok, like I thought :(
Ok I’ve ordered the ferric chloride and I’ll try it! in the meantime I was looking at the mechanism one more time and I was wondering: should...
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