Audio Electronics Supply AE-1 problems - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 6th December 2004, 07:57 PM   #1
240z4u is offline 240z4u  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Madison WI
Send a message via AIM to 240z4u
Default Audio Electronics Supply AE-1 problems

Hi guys. Im sorry i am definitely a newbie when it comes to repair. I have an AES model AE-1 I got from a freind that is not working. He had changed it to an outboard power supply, So i was left to hook the wiring back up. I am sure I have the wiring correct becuase I have the original kit build sheet.

When i fire up this preamp the power light comes on, but the fuse blows after a few seconds (slow blow fuse) with or without tubes installed. It seems to me that everything is visually fine in the chassis. I assumed something was shorted so i went though the build kit instructions and everything was okay. This pre sat in my buddies basement for god knows how long before i got it.

I do not really know where to start. If anyone needs to see pictures etc... let me know. Is there anyone in the chicagoland area who could possibly lend a hand? I really want to learn but have a terrible time making it through the technical stuff that is online.

Thanks guys - Evan
__________________
Yeah... it seemed like a good idea at the time.
  Reply With Quote
Old 7th December 2004, 12:03 PM   #2
diyAudio Member
 
cogsncogs's Avatar
 
Join Date: Jul 2003
Location: Wayne, West Virginia
I'd suspect bad power supply caps, shorted rectumfriers (rectifier diodes), power transformer, or even miss-wired PS caps i.e. polarity reversed. Did you ask the former owner as to why he used an outboard power supply? There's always a little caution to be observed when obtaining a piece of equipment that's been modified by someone.

WARNING!

As for this "technical stuff" , I'd familar myself with it BEFORE going any further! This is your wits not to mention your LIFE we're talking about here! Please read our Saftey Practices sticky at the top of this page and do some research! And get a buddy who knows this stuff to help you! My brother (who knows this stuff!) once hooked a power supply cap backwards (12VDC) and was noticing (feeling) the cap was getting hot and the cap Exploded (like an M-80!) in his fingers, he'll won't and hasn't done that again!

Always best to caution on the safe side!

Wayne
  Reply With Quote
Old 7th December 2004, 02:31 PM   #3
240z4u is offline 240z4u  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Madison WI
Send a message via AIM to 240z4u
Wayne, thank you for the post. I have read ALL the safety practices and will work very carefully. Ive been to the ER one too many times because I was in a hurry, or didnt take proper precautions.

Thanks - Evan
__________________
Yeah... it seemed like a good idea at the time.
  Reply With Quote
Old 10th December 2004, 11:24 AM   #4
diyAudio Member
 
Join Date: Nov 2002
Evan

Your power transformer is shorted. It is now necessary to make the decision as to purchasing another one for $95 plus shipping and repairing it or selling it as is and moving on to a hand made project. It has some nice features such as separate regulator circuits for the heaters and separate power supplies both sharing the same transformer. The circuit is so so and could be a lot better with suggestions from Frank and others. It does have so high dollar caps in it.

Anyone else have suggestions for Evan?
  Reply With Quote
Old 10th December 2004, 12:19 PM   #5
diyAudio Member
 
cogsncogs's Avatar
 
Join Date: Jul 2003
Location: Wayne, West Virginia
Yeah, It's probably the pwr transformer. That may be why he used an outboard/seperate power supply. If it was the rectifiers or the filtering caps he could of just of replaced them. But you never know for sure so check them also just in case. Especially if you buy a new pwr transformer! And oh-yeah don't be tempted to replace the original fuses with higher rated ones. I know you wouldn't do that but...just posting that for any-one else that may be reading this!

120 USD for a 6SN7WGT upgrade-pair? Pffttt! Not to mention the other upgrades! Makes me want to de-skin all my electrolytic power supply caps and my interconnects!

Cheers
Wayne
  Reply With Quote
Old 10th December 2004, 02:19 PM   #6
240z4u is offline 240z4u  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Madison WI
Send a message via AIM to 240z4u
Hmm, what to do now. I am not sure exactly what my next step will be. I think regardless I will be fixing the AE-1. It makes sense to me just because I really need the practice and experience. Joe had mentioned modding this to a tube rectifier etc... I may do this as well just for practice.

If i get it fixed and working well stock is it worth any money? I have a feeling i will end up parting with it either way.

Thanks - Evan
__________________
Yeah... it seemed like a good idea at the time.
  Reply With Quote
Old 10th December 2004, 10:05 PM   #7
diyAudio Member
 
cogsncogs's Avatar
 
Join Date: Jul 2003
Location: Wayne, West Virginia
Quote:
If i get it fixed and working well stock is it worth any money? I have a feeling i will end up parting with it either way.
Well I wouldn't go that far! I would keep it cause you can do a-lot with it! You've got a nice chassis to use, try some different topologies and you could come up with something that would beat the pants off the stock unit! I know that's what I would DO with it!

Cheers
Wayne
  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
Marchand Electronics XM-9 and power supply cowanrg Swap Meet 11 8th September 2010 02:19 AM
Audio Amateur/Audio Electronics PassFan Swap Meet 1 30th October 2009 07:04 PM
Audio Electronics Supply astouffer Tubes / Valves 2 4th August 2008 12:10 PM
Audio Electronics Supply SE-811 h_andree Swap Meet 1 30th October 2006 03:07 AM


New To Site? Need Help?

All times are GMT. The time now is 09:21 AM.


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