The Punch 150 Amplifier - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

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 8th April 2011, 04:46 AM   #1
cland20 is offline cland20  United States
diyAudio Member
 
Join Date: Apr 2011
Default The Punch 150 Amplifier

Looking to repair my old punch 150. Has a few componets that look to be burnt up inside the amp. Not sure what the technical name for them are but they have stamped on them "Buz11 R931" with the Motorolla logo on there also. This is going to be my first repair attempt on any amplifier and was looking for some guidance. I would like to know what I need to buy to get this thing pumping again. I believe it is an early 90's model amp 75 wats rms power at 4ohms. I think I managed to find the board number on it "Rockford cp PC-150 K3" PATENT#3883832 Thanks in advance for any and all help ya'll
  Reply With Quote
Old 8th April 2011, 06:13 AM   #2
diyAudio Member
 
seankane's Avatar
 
Join Date: May 2010
Location: Washington State
Dont have a schematic in front of me so can you post a pic of location?

I have a Punch 150 here but it is a K1 model. Does the amp power up?

What are the issues the amp has? The power supply in the one I have uses BUZ 11 and the gates are IN4746 zener diodes. Sometimes Rockford used the same power supply FETS and output FETS.

Please post a pic or give a little more info.................Thanks
  Reply With Quote
Old 11th April 2011, 02:31 AM   #3
cland20 is offline cland20  United States
diyAudio Member
 
Join Date: Apr 2011
Default Pictures punch 150 k3

Thanks for the quick reply Sean, Sorry about the lack of info...I thought that I included three pics but apparently they didn't upload. I'n not 100% sure what the gates look like but from what I can see on the board no parts with the number IN4746. Sean, do you need a pic of the location of the BUZ11, or a pic of the schematic I will try to post the pics again.


Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 11th April 2011, 03:40 AM   #4
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I'd recommend replacing the BUZ11s with IRF3205s. Replace the two transistors indicated by the arrows. Also replace the resistors in the rectangles with 47 ohm resistors.

Have you checked the output transistors?
Attached Images
File Type: jpg P2150021x2.jpg (742.1 KB, 60 views)
  Reply With Quote
Old 11th April 2011, 11:12 PM   #5
cland20 is offline cland20  United States
diyAudio Member
 
Join Date: Apr 2011
Thumbs up K-3

Perry, thanks for all the pertinent info. I will read up on it tonight first and possibly check the boards transistors / outputs...after I figure out what they physically are.
  Reply With Quote
Old 12th April 2011, 12:43 AM   #6
diyAudio Member
 
seankane's Avatar
 
Join Date: May 2010
Location: Washington State
In pic 2 you have posted I would replace the orange barrel type connectors which are zenner diodes, there part number is IN4746.
  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
Punch 150 schematic needed brandes.cm Car Audio 34 23rd October 2011 03:01 AM
Punch 150 that is stripped, is it savable? chipper Car Audio 3 29th March 2011 04:47 AM
RF Punch 150 chipper Car Audio 8 24th September 2009 12:08 AM
Punch 150 Butcher 0ldSch00lf00l Car Audio 25 7th January 2009 04:59 PM


New To Site? Need Help?

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