Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Rockford Punch 800a2
Rockford Punch 800a2
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 16th April 2018, 01:53 PM   #1
imraneesa is offline imraneesa
diyAudio Member
 
Join Date: Apr 2016
Default Rockford Punch 800a2

hi,

Complaint is speaker wires shorted and the amp stopped playing.

Outputs are fine. getting -18.8v on adj pin of lm337 and 18.8v on lm317.

there is not much voltage on opamps. Can anybody provide me circuit for the same amp will be appreciated. i have to trace why there is no voltage on opamps.

Thank you,

Best Regards
Imran Mohammad
  Reply With Quote
Old 16th April 2018, 04:23 PM   #2
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Board PC#?
  Reply With Quote
Old 16th April 2018, 04:32 PM   #3
imraneesa is offline imraneesa
diyAudio Member
 
Join Date: Apr 2016
Quote:
Originally Posted by Perry Babin View Post
Board PC#?

Pc-2038-F
  Reply With Quote
Old 16th April 2018, 04:55 PM   #4
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
closest I have.
Attached Files
File Type: pdf 800a2.pdf (518.6 KB, 11 views)
  Reply With Quote
Old 16th April 2018, 06:45 PM   #5
imraneesa is offline imraneesa
diyAudio Member
 
Join Date: Apr 2016
Quote:
Originally Posted by Perry Babin View Post
closest I have.
Thank you very much sir. I removed all the opamps and the voltage came back on +ve pin showing 20v and -ve pin showing -20v. But as soon as i replace one opamp both +ve and -ve pins of opamps having only negative voltage. -15v on negative pin and -11v on positive pin.
  Reply With Quote
Old 16th April 2018, 06:56 PM   #6
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Is R41 within tolerance?
  Reply With Quote
Old 16th April 2018, 08:52 PM   #7
imraneesa is offline imraneesa
diyAudio Member
 
Join Date: Apr 2016
Quote:
Originally Posted by Perry Babin View Post
Is R41 within tolerance?
R41 is with in tolerance. But I had replaced D3 before because it was bad. I replaced it with 1n4007 instead 1n4003.
  Reply With Quote
Old 16th April 2018, 11:14 PM   #8
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Do you read 0 ohms from the RCA shields to one end of R41 and 0 ohms from the other end of R41 to the primary ground terminal?
  Reply With Quote
Old 17th April 2018, 02:58 AM   #9
imraneesa is offline imraneesa
diyAudio Member
 
Join Date: Apr 2016
R16 and R25 both gone too much high. I replaced those with 1/4watt through hole resistors and I got the output signals. Don't know why those two resistors gone bad.
  Reply With Quote

Reply


Rockford Punch 800a2Hide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rockford Fosgate punch 800a2 channel repair chipper Car Audio 16 23rd September 2015 10:50 PM
rockford fosgate punch 800a2 non working chipper Car Audio 8 27th May 2012 09:13 PM
Rockford Fosgate Punch 800a2 seankane Car Audio 3 25th June 2011 05:18 AM
Rockford Punch 800a2 seankane Car Audio 28 5th April 2011 01:27 AM
punch 800a2 $100?? chipper Car Audio 6 8th July 2010 06:21 AM


New To Site? Need Help?

All times are GMT. The time now is 05:44 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki