pioneer sx1500td blowing fuse
Posts: 1,519
Threads: 69
Joined: Nov 2012
City: Kansas city, MO.
Thanks Ron. I was afraid I might end up there. I don't anything about the mpx board or the IF strip except that the IF board has 4 metal can ICs (LM703L) they have 6 legs on each one. and the mpx board has a 14 pin. IC (mc1304)
I just started to take some transistor readings on the control amp unit. Although I had previously tested them.
When I went to check V/BC of Q1 with just (one) lead of the Dmm. touching the base, I got a loud hum at the speakers. I had nor yet touched the other lead to anything.
I'm going to go ahead and change the 4 transistors on the control board and see where I'm at.
NOT giving up!! and appreciate all the help I can get. Big thanks to morzh/Mike for his help.
Messages In This Thread
RE: pioneer sx1500td blowing fuse - by KCMike - 01-31-2015, 06:09 PM
Users browsing this thread: 1 Guest(s)
|
|
Recent Posts
|
|
Philco 71 Code 125
|
| Hello,
I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM |
|
Stromberg Carlson 1500 Squeal
|
| And life just keeps getting more complicated.dconant — 07:57 AM |
|
54C Complete Teardown/Rebuild
|
| Hello Roy,
here is this one
sincerely Richardradiorich — 12:45 AM |
|
54C Complete Teardown/Rebuild
|
| Richard,
Had grabbed it already but thank you just the same. I find myself wanting to find some way to block out the...glyphmon — 12:03 AM |
|
54C Complete Teardown/Rebuild
|
| Hello roy,
here is a link to the schematic .
Sincerely Richardradiorich — 11:54 PM |
|
54C Complete Teardown/Rebuild
|
| Richard,
The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM |
|
Preliminary work on wife's Silvertone 2014
|
| Did an alignment today which was interesting. IF alignment went great, almost all was already spot-on. Adjusting on th...glyphmon — 11:35 PM |
|
54C Complete Teardown/Rebuild
|
| The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM |
|
54C Cabinet Refinish
|
|
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM |
|
54C Complete Teardown/Rebuild
|
| While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project. O...glyphmon — 11:07 PM |
|
Who's Online
|
| There are currently no members online. |
|
 
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
