peavey - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 18th April 2006, 12:23 AM   #1
diyAudio Member
 
Join Date: May 2005
Location: mich
Unhappy peavey

need help with peavey pv8.5
there is a part on the driver board that blowen need help
fixing
  Reply With Quote
Old 18th April 2006, 02:32 AM   #2
Leolabs is offline Leolabs  Malaysia
diyAudio Member
 
Leolabs's Avatar
 
Join Date: Dec 2004
Location: Bukit Mertajam
Send a message via MSN to Leolabs
First,check for shorted transistor(esp output stage).
  Reply With Quote
Old 18th April 2006, 04:26 PM   #3
diyAudio Member
 
Join Date: May 2005
Location: mich
Exclamation peavey

is that on the driver board or output board?
thanks
  Reply With Quote
Old 18th April 2006, 04:38 PM   #4
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Fellowesman,
I'm afraid you have to provide more info.
Do you have the schematic? Are you familiar with tackling that kind of amps? What happened and what did you already attempt?

/Hugo
  Reply With Quote
Old 18th April 2006, 10:36 PM   #5
diyAudio Member
 
Join Date: May 2005
Location: mich
Default peavey

netlist
this is the lowdown
we were playing and the 8.5 smoked
now for whats blown is the mps-6533/34 transistior is completely gone
and mje-15031 driver transistior looks to have a hole in it
other than just replace the part that gone what else should be checked? i do have use of a dvm. is there a way to check the driver tran on the board
thanks
  Reply With Quote
Old 19th April 2006, 07:43 AM   #6
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Fellowesman,
this is not just random component failure but a rather major problem.
You will have to take out all output transistors and drivers and it will be best to replace them all if you want a good repair. Every diode and resistor will need to be checked in the output stage. Again, if you are not familiar with this kind of amps, I strongly suggest to take it to a good service point.

/Hugo
  Reply With Quote
Old 19th April 2006, 11:29 AM   #7
diyAudio Member
 
Join Date: May 2005
Location: mich
Default peavey

netlist
as you seen in earler post was just sent home after haveing a heart
attack. have plenty of time on my hands and very little money.
i did check with a repair shop near here and was told "just return it to
peavey" they would not even look at it. i have found that very few
places will fix i mean repair anything (replace componets) they just
want to replace the whole board!

i have the part lay out and the schematcs for this amp and the use of
a dvm. i should replace parts 200 204 and 100 104 along with parts
202 203 and 102 103
thanks
  Reply With Quote
Old 19th April 2006, 01:27 PM   #8
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Yes, all TO3 transistors should be replaced. Check and replace the diodes especially those build into the heatsinks.

Take care of that heart.

/Hugo
  Reply With Quote
Old 19th April 2006, 08:19 PM   #9
diyAudio Member
 
Join Date: May 2005
Location: mich
Default peavey


are they to3??
mine shows them to be to-220 and to-92
or am i wrong?
also what other things need to be checked?
what would make that part fail?

thanks ron
  Reply With Quote
Old 19th April 2006, 08:36 PM   #10
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Of course you are correct. We are talking driver board. I had the output board in mind. My schematic is so bad I can hardly read the part numbers.
So, check all you can, the visually damaged parts are definitely to be replaced, take out every transistor that measures slightly suspicious on that board and measure it out of circuit. Same with the diodes.
As for the output board, failure of the driver board could have damaged one or more outputs. Take your time and check them as well.
I hate to ask but do you know how to measure a semiconductor?
I'll gladly explain if not.

/Hugo
  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
peavey amp fellowesman Solid State 23 13th August 2011 02:25 AM
peavey 18's dan Multi-Way 16 14th April 2011 05:28 PM
Help for my Peavey PV8.5C fabiodord Solid State 17 8th June 2008 08:29 PM
peavey cs 800 erockin Solid State 1 30th March 2007 11:38 PM
Peavey Cs-800 Pwr. Amp dstx144 Solid State 10 30th January 2006 04:16 PM


New To Site? Need Help?

All times are GMT. The time now is 04:58 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