Re: Help with blowing transistor NAD T752 receiver
Thanks again Eccerr0r for your patience and all the help you are giving me.
Ok, so removed R518 and checked it, measures 3.291K out of circuit. Soldered it back in. Checked R542 while I as at it, and that one is ok too at 3.296K. Replaced Q506 although the former reads good in my transistor tester and installed a new one.
Put it back together, and started it without any probes attached, turns on fine goes green and goes to FM. Put the probes on and figured out what was the problem of it going into protect mode, I was holding one of the probes to those wires I soldered on Q506 with my finger - I think I was serving as sort of a ground...as soon as I clamped the probe with a clamp. did not go into protect mode and started up just fine, however without any reading.
Now, my bad...when you said across Q506 I assumed it was the same connections that I have made before, but your last post mentions C-B while I have my connections on C-E.
So instead, I took from C to ground on each channel and got Q506 @ 0.7V, Q518 C to ground @ 1.52V and Q530 C to ground @1.57V....
Let me know if I have this right, so that means I would have to go back and solder some wires from B for each of Q506, Q518 and Q530 to measure "across" from C-B ?
Thanks again Eccerr0r for your patience and all the help you are giving me.
Ok, so removed R518 and checked it, measures 3.291K out of circuit. Soldered it back in. Checked R542 while I as at it, and that one is ok too at 3.296K. Replaced Q506 although the former reads good in my transistor tester and installed a new one.
Put it back together, and started it without any probes attached, turns on fine goes green and goes to FM. Put the probes on and figured out what was the problem of it going into protect mode, I was holding one of the probes to those wires I soldered on Q506 with my finger - I think I was serving as sort of a ground...as soon as I clamped the probe with a clamp. did not go into protect mode and started up just fine, however without any reading.
Now, my bad...when you said across Q506 I assumed it was the same connections that I have made before, but your last post mentions C-B while I have my connections on C-E.
So instead, I took from C to ground on each channel and got Q506 @ 0.7V, Q518 C to ground @ 1.52V and Q530 C to ground @1.57V....
Let me know if I have this right, so that means I would have to go back and solder some wires from B for each of Q506, Q518 and Q530 to measure "across" from C-B ?
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