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I have a Rockford Fosgate T1000.1bd amplifier. Recently it…

Customer Question
I have a Rockford Fosgate...
I have a Rockford Fosgate T1000.1bd amplifier. Recently it started making a humming through my subs, but only when it was cold outside. Then it started losing its gain or power to the subs. Then when I would turn it up it put the amp in protect mode. It would do this with or without the subs attached.
I replaced rca cables and hooked it back up but it is still very weak. I need help testing the internal board to see what the problem is. Thank you
Submitted: 3 months ago.Category: Car Electronics
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Customer reply replied 3 months ago
Does anyone have an answer
Answered in 12 hours by:
4/3/2018
Car Electronics Technician: Gina-Moderator, Moderator replied 3 months ago
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Customer reply replied 3 months ago
I still need assistance. Should I word my question differently? Basically I'm trying to troubleshoot an amplifier. Maybe I added too much info to start.
Car Electronics Technician: Expert-Repair, Car Electronics Technician replied 3 months ago
Expert-Repair
Expert-Repair, Car Electronics Technician
Category: Car Electronics
Satisfied Customers: 7,446
Experience: ASE, electronics, Marine inboards and electronics, automotive drivability, all around repair tech,
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Hello,

Thank you for allowing me to assist you, my name is Joe and I will be happy to help you with your concern today. Please bear with me for just a min while I form my reply to you.

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Customer reply replied 3 months ago
Joe I'm actually driving home. Will you be available in about 45 minutes or 5:15 pm Arizona time?
Car Electronics Technician: Expert-Repair, Car Electronics Technician replied 3 months ago

Have you already measured caps and resistors? Generally a cold only issue can be related to solder issues such as something got too hot and melted or just broke solder, this is why when its warm the piece expands and makes better contact vs cold = expansion and not as good connection being made.

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Customer reply replied 3 months ago
I'm not sure what you mean by measured. I did take my Android phone and used camera on zoom to look at all the resistors and mosfets. Nothing looks like it got hot. I don't know if I'm able to test maybe resistance between points in the board or not.
Also I noticed when I switch the switches in amp it makes loud popping through my subs sometimes.
Customer reply replied 3 months ago
Are you able to find a schematics of this amp if I give got the numbers off the board? Then maybe walk through how to test what I need to test.
Customer reply replied 3 months ago
Well maybe you will have time tomorrow.
Car Electronics Technician: Expert-Repair, Car Electronics Technician replied 3 months ago

My apologies for not getting back to you last night. I am not familiar with this model and do not have the schematics for it, I did however want to touch base with you to see what you have done so far. The crack that would be in the solder is usually not even visible. They all have unit measurements that you can measure with an ohm meter.

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Customer reply replied 3 months ago
I would expect that an answer from an expert would include some of the following.
1. What to test
2. How to test it
3. What test results should show
4. A schematics or diagram of the board or whatever I'm working with.
That's what an expert should offer someone paying for help.
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