Fender Champion 110, upc1188 - diyAudio
Go Back   Home > Forums > Live Sound > Instruments and Amps

Instruments and Amps Everything that makes music, Especially including instrument amps.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 1st March 2008, 04:40 AM   #1
diyAudio Member
 
Join Date: Oct 2006
Default Fender Champion 110, upc1188

Hello all,

So here's my dilemma, hope someone can help

I recently acquired a Fender Champion 110 guitar amp, that didn't turn on. After i tore it apart and couldn't see any burnt components i needed to isolate the power supply from the rest of the components so i removed all 5 op amps and put dip sockets in. now the only thing connected to the power supply was the upc1188 20watt power amp chip i powered the unit up and the transformer started buzzing (from what ive found this usually happens when you ground a tranny output) so i shut of the amp and found that one of the 1n4003 bridge diodes was conducting both ways, so i replaced it and the unit powered up fine. Great, or so i thought

I still dont get an output signal, i found a copy of a Fender champion 30 schematic ( http://www.manualnguide.com/dl/10166/ )which is almost the exact same (except for the power out chip which id a tda1514). so basically I am sort of at a point were i think i need a upc1188 chip (or the proper schematic). Does anyone know where i can get one or 2 of these chips? or i also have a second option. I could always build a kludge board (26v rails) with a lm3886 chip i have lying around and interface that with the existing circuit.

Any help in sourcing parts or schematic would be greatly appreciated.

Dave
  Reply With Quote
Old 2nd March 2008, 12:16 AM   #2
diyAudio Member
 
Join Date: Oct 2006
well after i reverse engineered the power amp section and figured out what was wrong I ended up finding s an electrolytic cap in the signal path was dried up. Who uses electrolytic in audio signal path??? urg) i then found the schematic of the whole amp tucked inside the amp. so if anyone need the schematic email me and i will scan and email it.


Dave
  Reply With Quote
Old 3rd March 2008, 09:01 AM   #3
diyAudio Member
 
Join Date: Jul 2005
Location: North Derbyshire
Quote:
Originally posted by drummer_Dave
Who uses electrolytic in audio signal path??? urg)
Almost every solid state amplifier ever made?
__________________
Nigel Goodwin
  Reply With Quote
Old 3rd March 2008, 09:17 AM   #4
diyAudio Member
 
Geek's Avatar
 
Join Date: Sep 2004
Hi Dave,

Quote:
Originally posted by drummer_Dave
...an electrolytic cap in the signal path was dried up. Who uses electrolytic in audio signal path???...
Sounds to me like you need to join the tube amp crowd

Cheers!
  Reply With Quote
Old 3rd March 2008, 04:02 PM   #5
diyAudio Member
 
Join Date: Oct 2006
I agree geek, once i finish off my digital matrix mixer i plan to do a nice 15 - 20 watt tube amp (never dealt with tubes before so im sure there will be a lot of searching in this site) fortunately a guy i work with (who is 70+) has a whole pile of tubes and transformers i can have, i just have to sort through them, but thats a whole nother thing for another day

Dave
  Reply With Quote
Old 5th March 2008, 06:44 AM   #6
diyAudio Member
 
Join Date: Mar 2004
Location: Arkansas
Quote:
Does anyone know where i can get one or 2 of these chips?
I see that you've already fixed your amp, but if you still want to pickup
a few spare ICs, tubesandmore.com stocks them.

Look under the Solid-State-Devices / ICs / Fender category.

IC - ORIGINAL FENDER, POWER AMP PC1188H
Part Number = P-QPC1188H
2007 Catalog / page 68
Price USD = $10.25
__________________
Writing is good exercize for the texticles!
  Reply With Quote
Old 5th March 2008, 06:43 PM   #7
diyAudio Member
 
Join Date: Oct 2006
thanks for the heads up head_spaz


Dave
  Reply With Quote
Old 21st April 2008, 06:27 PM   #8
Kenda47 is offline Kenda47  United Kingdom
diyAudio Member
 
Join Date: Apr 2008
Default Fender Champion 110

Hi Dave

It looks like you solved your problem. I have been asked to see if I can repair my friend's son's Champion 110 but the amp is pretty fried in the output stage area and with no schematic I am struggling to know what the components should be.
You mentioned that you can e-mail a schematic for the Champion 110. If you still have one I would be very grateful.

Thanks for your help.

Cheers

Keith
  Reply With Quote
Old 21st April 2008, 06:57 PM   #9
diyAudio Member
 
Join Date: Oct 2006
yep i got the schematic at home, Ill try to scan it and email it within the next day or so if you can be patient...

Dave
  Reply With Quote
Old 21st April 2008, 08:52 PM   #10
Kenda47 is offline Kenda47  United Kingdom
diyAudio Member
 
Join Date: Apr 2008
Cheers Dave that would be great. Thanks alot. I notice you are thinking opf buildiong a valve amp. This is my forte so if I can help let me know.

Keith
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fender Champion 110 jam9 Instruments and Amps 5 31st January 2009 03:41 AM
Praxis vs Sample Champion Erik F Multi-Way 4 11th November 2008 08:42 PM
Champion Borteep Instruments and Amps 31 16th January 2008 02:53 PM
Sample Champion and measurement mics? BenLilly Multi-Way 1 11th March 2003 05:24 PM
Montreal Alouettes is the 2002 Grey Cup Champion FrankDIY Everything Else 0 25th November 2002 02:13 AM


New To Site? Need Help?

All times are GMT. The time now is 08:11 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2