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 Fosgate T2500-1bdcp
Rockford Fosgate T2500-1bdcp
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 20th February 2018, 02:14 AM   #11
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
What's the rail voltage?
  Reply With Quote
Old 12th March 2019, 01:50 AM   #12
seankane is offline seankane  United States
diyAudio Member
 
seankane's Avatar
 
Join Date: May 2010
Location: Washington State
Just dug this amp back out. Its my amplifier and I wasn't in a hurry to repair it. I'm caught up and want to get back to it.


The rail and regulated are slightly different. I'm not sure if this is causing the current draw. Something is pulling the + rail down.


Rail voltage is +65vdc and -81vdc
Regulated is +13vdc /-17vdc
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch
  Reply With Quote
Old 12th March 2019, 03:07 AM   #13
seankane is offline seankane  United States
diyAudio Member
 
seankane's Avatar
 
Join Date: May 2010
Location: Washington State
I also found at TP1000 R6 and R1022 should have -19.50vdc and they have -27.50vdc.


Also found that the only regulator in the output section with proper readings is Q2000. Q2000 has -27vdc in and -6.5vdc out.


Q2010 and Q2012 have only 13.71vdc in which is low and 11.5vdc out which is normal.


Q2001 has 13.71vdc in and only 6.5vdc out.


Could this Q2001 MJD44H11 be pulling the others down and causing excessive load on the regulator and rectifier?
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch
  Reply With Quote
Old 12th March 2019, 03:12 AM   #14
seankane is offline seankane  United States
diyAudio Member
 
seankane's Avatar
 
Join Date: May 2010
Location: Washington State
I was measuring per the T1500-1bdcp readings. This amp may be different.
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch
  Reply With Quote
Old 12th March 2019, 03:23 AM   #15
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
The rails for the outputs aren't referenced to anything and there is no positive or negative rail.

The regulated rails are referenced to the RCA shields. What is the regulated voltage (the +13vdc /-17vdc) with the black probe on the RCA shields?
  Reply With Quote
Old 12th March 2019, 03:38 AM   #16
seankane is offline seankane  United States
diyAudio Member
 
seankane's Avatar
 
Join Date: May 2010
Location: Washington State
Quote:
Originally Posted by Perry Babin View Post
The rails for the outputs aren't referenced to anything and there is no positive or negative rail.

The regulated rails are referenced to the RCA shields. What is the regulated voltage (the +13vdc /-17vdc) with the black probe on the RCA shields?


I just posted what my meter was reading on the screen for the rectifiers but I was referencing from input ground terminal.


Regulated if I use the input rca shield the voltages keep going down and down. I can wait till they settle and give you those readings?


If I use the pass thru shield I get steady readings as follows:


U1000
27.42
13.70
12.39


U1001
-17.03
-27.35
-15.28
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch
  Reply With Quote
Old 12th March 2019, 03:47 AM   #17
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Are R5 and R10 (near u1000) within tolerance?
  Reply With Quote
Old 12th March 2019, 03:55 AM   #18
seankane is offline seankane  United States
diyAudio Member
 
seankane's Avatar
 
Join Date: May 2010
Location: Washington State
Suppose to be 0 ohm they read 000.1 ohms in auto range.


Set to my lowest range they read 0.000 ohms
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch
  Reply With Quote
Old 12th March 2019, 05:18 AM   #19
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Were you reading from the bottom of the board? The pin configuration appears to be off.

Everything seems to be about right for the regulated supply.
  Reply With Quote
Old 12th March 2019, 05:35 AM   #20
seankane is offline seankane  United States
diyAudio Member
 
seankane's Avatar
 
Join Date: May 2010
Location: Washington State
Sorry I should have posted the readings with each leg posted with it. I could have got off on the configuration.


The amp produces clean audio and seems to work well just drawing 8 amp of current at idle and I know this is not normal. One would think if there was a problem on the audio side the amp wouldn't function properly.


The waveforms on the drive circuit for the power supply look good, I'm just unsure why the current draw.
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch
  Reply With Quote

Reply


Rockford Fosgate T2500-1bdcpHide 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
T1500-1bdcp Rockford fosgate DREW028 Car Audio 17 14th March 2019 05:57 PM
Rockford T2500-1bdCP Schematic / Service manual? Troy Dionne Car Audio 10 10th February 2019 02:04 AM
Rockford Fosgate T2500-1BDCP PaleFaceRider202 Car Audio 4 5th February 2018 11:34 PM
Rockford Fosgate T-2500-1BDCP josesony68 Car Audio 15 6th November 2016 08:04 AM
Rockford Fosgate T2500-1bdcp Parts rizzo30 Parts 2 4th January 2012 12:41 AM


New To Site? Need Help?

All times are GMT. The time now is 04:36 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki