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pioneer sx1500td blowing fuse
#48

I tried powering amp without speaker,I just have one 4ohm. bookshelf speaker to test with.
Checked C15-C18 with ohm setting of meter in circuit I get a reading of like 1.504M on all of them.
V3 & V4 you said to minimum setting. I turned them full ccw.
Powered up and still drawing over 1 amp at 50V. I did have volt meter hooked to C13 + and it was reading 18volts when the B+ of amp was at 50 volts.
I unhooked the B+ to main amp and started taking volt readings at power supply again with outlet volts set to 117V. With the main amp out of circuit I can power up with amps staying .1v
I found something that might be the problem,not for sure.
I can get a AC reading on the B1 post which feeds the main amp. It is 25.40v ac. also can get reading on DC setting it is 54Volts.
I don't get any ac readings on the other B+ posts.
On the power board I have replaced all the E-caps, transistors Q1, Q2 ,Q3, the diodes D-2,3,4,5.
and the zener diode D6. I did remove D1- SB-3P and it tests good. I have not changed any resistors. Do you think something on power board is letting ac into the B+ to main amp? Your help is greatly appreciated.


Messages In This Thread
pioneer sx1500td blowing fuse - by KCMike - 11-24-2014, 10:59 AM
RE: pioneer sx1500td blowing fuse - by morzh - 11-24-2014, 12:08 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-24-2014, 02:05 PM
RE: pioneer sx1500td blowing fuse - by morzh - 11-24-2014, 02:47 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-24-2014, 03:16 PM
RE: pioneer sx1500td blowing fuse - by morzh - 11-24-2014, 03:21 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-24-2014, 04:04 PM
RE: pioneer sx1500td blowing fuse - by morzh - 11-24-2014, 04:15 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-24-2014, 04:28 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-24-2014, 05:02 PM
RE: pioneer sx1500td blowing fuse - by morzh - 11-24-2014, 05:55 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-24-2014, 06:57 PM
RE: pioneer sx1500td blowing fuse - by morzh - 11-24-2014, 08:54 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-24-2014, 09:51 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-24-2014, 10:44 PM
RE: pioneer sx1500td blowing fuse - by morzh - 11-24-2014, 11:18 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-25-2014, 07:51 AM
RE: pioneer sx1500td blowing fuse - by morzh - 11-25-2014, 11:22 AM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-25-2014, 12:28 PM
RE: pioneer sx1500td blowing fuse - by BrendaAnnD - 11-25-2014, 02:44 PM
RE: pioneer sx1500td blowing fuse - by morzh - 11-25-2014, 03:10 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-25-2014, 03:15 PM
RE: pioneer sx1500td blowing fuse - by morzh - 11-25-2014, 05:31 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 11-25-2014, 06:34 PM
RE: pioneer sx1500td blowing fuse - by morzh - 11-25-2014, 07:02 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 12-15-2014, 01:45 PM
RE: pioneer sx1500td blowing fuse - by morzh - 12-15-2014, 02:01 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 12-15-2014, 02:16 PM
RE: pioneer sx1500td blowing fuse - by morzh - 12-15-2014, 02:22 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 12-15-2014, 02:35 PM
RE: pioneer sx1500td blowing fuse - by morzh - 12-15-2014, 02:48 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 12-15-2014, 05:56 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-06-2015, 12:09 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-06-2015, 02:28 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-06-2015, 04:40 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-06-2015, 09:07 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-06-2015, 09:16 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-06-2015, 09:22 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-06-2015, 09:26 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-06-2015, 09:31 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-06-2015, 10:14 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-07-2015, 09:53 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-07-2015, 11:44 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-07-2015, 11:53 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-08-2015, 09:35 AM
RE: pioneer sx1500td blowing fuse - by morzh - 01-08-2015, 10:59 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-09-2015, 06:34 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-09-2015, 11:04 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-09-2015, 11:27 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-09-2015, 11:57 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-10-2015, 12:12 AM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-10-2015, 09:01 AM
RE: pioneer sx1500td blowing fuse - by morzh - 01-10-2015, 09:56 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-11-2015, 02:46 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-11-2015, 06:08 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-11-2015, 10:05 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-11-2015, 11:23 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-12-2015, 10:12 AM
RE: pioneer sx1500td blowing fuse - by morzh - 01-12-2015, 12:07 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-16-2015, 08:55 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-16-2015, 09:53 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-16-2015, 10:02 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-25-2015, 10:02 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-25-2015, 11:08 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-26-2015, 04:14 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-26-2015, 05:15 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-26-2015, 06:28 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-26-2015, 06:34 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-28-2015, 11:57 AM
RE: pioneer sx1500td blowing fuse - by morzh - 01-28-2015, 12:40 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-28-2015, 02:00 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-28-2015, 03:16 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-28-2015, 09:34 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-28-2015, 09:56 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-28-2015, 10:32 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-28-2015, 11:13 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-29-2015, 03:31 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-31-2015, 03:21 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-31-2015, 05:09 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-31-2015, 06:16 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-31-2015, 07:03 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-31-2015, 07:12 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-31-2015, 07:57 PM
RE: pioneer sx1500td blowing fuse - by morzh - 01-31-2015, 08:22 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 01-31-2015, 09:37 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 02-01-2015, 07:55 PM
RE: pioneer sx1500td blowing fuse - by morzh - 02-01-2015, 08:19 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 02-01-2015, 09:09 PM
RE: pioneer sx1500td blowing fuse - by morzh - 02-01-2015, 09:25 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 02-01-2015, 09:55 PM
RE: pioneer sx1500td blowing fuse - by morzh - 02-02-2015, 08:24 PM
RE: pioneer sx1500td blowing fuse - by Eliot Ness - 02-02-2015, 08:36 PM
RE: pioneer sx1500td blowing fuse - by morzh - 02-02-2015, 09:33 PM
RE: pioneer sx1500td blowing fuse - by morzh - 02-02-2015, 10:41 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 02-10-2015, 12:57 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 02-10-2015, 07:14 PM
RE: pioneer sx1500td Fixed! - by KCMike - 04-03-2015, 04:41 PM
RE: pioneer sx1500td blowing fuse - by morzh - 04-03-2015, 05:00 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 04-03-2015, 08:37 PM
RE: pioneer sx1500td blowing fuse - by KCMike - 04-09-2015, 07:56 PM



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