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Fix for overheated Kustom KPM 7250 PA amp

Our Kustom KPM 7250 PA amp overheated because we inadvertently covered the open air vent on top of the amp. Now it is not working. Do we just put in a new fuse or will this be a more complicated fix?

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You can start by trying a new fuse, use the correct fuse for your amp. If the fuse is blown, you can look at it and see the middle is burnt connecting the two sides.

Posted on Mar 01, 2009

  • justinryan11 Nov 25, 2010

    Please define where the "fuse" is. I have the same issue and really need to find the part I need to replace. Pictures possibly?? PLEASE let me know.

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Posted on Jan 02, 2017

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Hello. Where is the fuse located to be replaced in my Kustom KPM4060 Amp. Thanks Shawn.


I have the same problem with my KPM 4080 amp. I have no clue where the fuse goes. I'm sure mine also needs a fuse replaced.

Mar 11, 2015 | Kustom Music

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My limiter is always on, no sound


Hi, i would like to know what you have running into the input side of the mixer and also what you have running on the output side. I am unclear, does it make any sound at all? Is your mute button pressed?

Dec 20, 2013 | Kustom KPM 8420 400 Watt Powered Mixer

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The amp won't play stereo sound no matter the cable setup.


first check the amp is not burn then check if there is a fus in the amp see if is not burn

Sep 11, 2013 | Kustom KPM4080 PA Amplifier/Mixer

1 Answer

My Behringer 2500 wat pa amp keeps getting hot and cutting off


Step 1:

Overheating is typically caused by poor ventilation. The best thing is to make sure that you --

Step 2:

have plenty of space ALL-AROUND the amp

Step 3:

Fan(s) are working correctly (should always be on).

Step 4:

Boards are clean -- may require opening up housing and spraying with compressed air.

Step 5:

Be sure that the speakers you're pushing are acceptable to amp's output.

Step 6:

If still overheating, may require service.

Jan 07, 2013 | Behringer Music

1 Answer

I have a KPM 4080 mixer that has a blown 1A fuse. What would be the most common cause.


The most common cause of a fuse blowing is excess current... now what has/could cause that is impossible for us to diagnose remotely. Failure in the power amp would be prime suspect with power supply components a close second. Double check that fuse rating... if on 120 volts it sounds low... it would be right for 220 operation.

Jun 04, 2011 | Kustom KPM4080 PA Amplifier/Mixer

1 Answer

I have a Kustom KPM 4100 amp head that's cutting out. It works OK for 5-10 mins then crak snap crakle then nothing. After a cooling off period I can repeat the process. I have pulled the power amp and...


Have you tried connecting a single speaker to each output and cutting the volume down to see if you have a load or impedance problem? The amp may be perfectly fine except it's trying to play to a 2 ohm or less load :-)

Carl

Mar 16, 2011 | Kustom KPM4100 PA Amplifier/Mixer

1 Answer

My Kenmore Elite electric stove top will turn on fine, but it will randomly cut off. Then none of the burners will heat up, but lights are on like all is fine. If I turn off the power for 5 minutes it...


If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

An overheating magnetron can be :
  • operating oven without cover(s) in place
  • wrong magnetron installed in oven
  • an old or otherwise failing magnetron
  • cracked magnetron magnet
  • improper power line voltage (US homes should be 110-125VAC)
  • foods low in moisture (popcorn & bacon, e.g. - add 1/2 cup of water in rear oven)
  • failed or inoperable cooling fan or hood vent exhaust fan
  • deteriorating foam weatherstripping seals in air ducts or on outside cover
  • blocked air vents (dust, animal nest debris, insufficient free air space behind & around oven, etc.)
  • clogged or greasy charcoal filter or grease filter
  • blocked duct in hood vent exhaust
I suspect a failure or the fan, clogged filter or bad magnetron.

I appreciate your thoughtful rating of my answer.

Feb 07, 2011 | Microwave Ovens

6 Answers

Kustom Profile One 100w PA -loud bang!


i have three of these in my amp repair shop. one of them does exactly this. as well, the other two are suspect to the same issue. i believe it is low quality leaky or shorting caps. are you using the xlr inputs or 1/4 inch inputs? so far, these are working good thru the 1/4 inch jacks, but the xlr inputs are squeely with feedback and i get that loud bang/pop from one of them. kustom wants me (my shop) to be an authorized repair station for them. i want to be able to resolve these three amps before i accept. if they are a nightmare to deal with, then i will tell them no way.
i will post back with in the next week with more results and hopefully i will have precise solution with parts and procedures.
yost amplifier repair
yostamplifier.com

Oct 06, 2009 | Audio Players & Recorders

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