Punch 150s/Power 550s - Page 2 - 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 27th August 2013, 03:47 PM   #11
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Remove those transistors, then re-check the resistance.
  Reply With Quote
Old 27th August 2013, 07:54 PM   #12
neela30 is offline neela30  United States
diyAudio Member
 
Join Date: Jul 2013
Location: Christiansburg, VA
~1 and ~2 ohm on the bad 540/9540. The rest of them look normal now.

I have spares I ordered for the 150 repair but only one 540 and two 9540. I thought I read transistors should be matched?
  Reply With Quote
Old 27th August 2013, 08:17 PM   #13
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
You can clamp everything down (leaving the empty locations open) and power it up through a small fuse or a current limiter to see if there are any other problems.
  Reply With Quote
Old 27th August 2013, 08:22 PM   #14
neela30 is offline neela30  United States
diyAudio Member
 
Join Date: Jul 2013
Location: Christiansburg, VA
Before doing that I found resistor 271 reading ~75 ohms. It' severely discolored but look as if it is supposed to be a 0.1 ohm %5 like the rest of them on the board.

This is where I got lost on the 150. I do not know how to calculate the wattage I need? I look at the schematic and I see RM2-001 .1 and assume that designates the wattage?

Last edited by neela30; 27th August 2013 at 08:26 PM. Reason: numbers running together
  Reply With Quote
Old 27th August 2013, 08:26 PM   #15
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Is this a resistor connected to an empty transistor location?
  Reply With Quote
Old 27th August 2013, 08:30 PM   #16
neela30 is offline neela30  United States
diyAudio Member
 
Join Date: Jul 2013
Location: Christiansburg, VA
Yes. The 9540 I pulled.
  Reply With Quote
Old 27th August 2013, 08:40 PM   #17
neela30 is offline neela30  United States
diyAudio Member
 
Join Date: Jul 2013
Location: Christiansburg, VA
12.2 ohm on R270 also.
  Reply With Quote
Old 27th August 2013, 08:46 PM   #18
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
If they are connected to the empty locations, they are unlikely to have any effect on testing.
  Reply With Quote
Old 27th August 2013, 09:05 PM   #19
neela30 is offline neela30  United States
diyAudio Member
 
Join Date: Jul 2013
Location: Christiansburg, VA
I get a voltage drop when I apply rem but it does not trip my psu.
  Reply With Quote
Old 27th August 2013, 09:13 PM   #20
neela30 is offline neela30  United States
diyAudio Member
 
Join Date: Jul 2013
Location: Christiansburg, VA
Left channel delivers clean audio!
  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
Rockford Fosgate Punch 150S RiLoWa Car Audio 2 29th April 2012 02:55 AM
punch 40i power up but no sound bass-mechanic Car Audio 3 26th April 2009 06:11 PM
Selling a punch 250a2, old punch 75, and ppi epx 205 on EBAY ppia600 Swap Meet 0 23rd February 2008 01:17 AM
Rockford Fosgate punch/power 500.2 Clipped Car Audio 2 11th July 2007 07:08 AM
My experience: the cheap punch set VS Greenlee punch vax9000 Tubes / Valves 5 21st July 2006 07:52 PM


New To Site? Need Help?

All times are GMT. The time now is 11:56 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