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I'd appreciate a schematic to help me replace the transformer on my ProSub 800

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Contact Definitive customer service at (800) 228-7148

Posted on Apr 02, 2011


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1 Answer

Where can i find a transformer for a squier 15watt practice amp.

For Fender parts and schematics, call Fender Customer Service at 800-856-9801. I will mention that the cost of replacing a transformer in a 15 watt Squier amp would lead me to just replacing the amp

Feb 02, 2015 | Squier Music

4 Answers

Sony KV-32FS12 32" TV

This condition be directed us toward pin modulator transistor Q504 which may shorted. Parts necessary to fix this unit may be D501, D504 and Q504.
Check this site if you need the schematic diagram: //
Good Luck.

Jan 28, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

ProSub 600 tripping off during playback of low bass and turns on after a while but works perfectly if volume is turned down. what could be the problem?

  • The DSW ProSub is a nice amplified sub. The reason it is shutting down is the amp is being worked to hard and it's going into thermal mode and after you turn down the volume and it cools down it's coming back on. To much of this and you will have a nice sub and no amp to run it.
  1. One thing to do is keep the sub/amp in a well ventilated are and put a fan on it if you can to help move the heat away from the unit.
  2. The amp is rated at 250 watts so if you push it to hard it's gonna keep shutting down. So turn it down a little so it runs longer and smoother or add another sub to the set up if you need it louder (like we all like). One sub can only do so much.
  3. Also make sure if the receiver your using has a base setting or an EQ that you keep them levels set a little lower. Most receivers and home theaters already have an amp in them and you don't want to run to much of that into another amp. It's over kill. Find that happy medium.

  • If you have any questions or comments please feel free to ask.
  • Thank you for using FixYa.
Regards, Tony

Jul 20, 2011 | Definitive ProSub 800 Subwoofer Speaker

1 Answer

Hi have yamaha htr-5940 which has lost power , is it a common problem ? ( fuse is ok ) any help would be appreciated .regards Dave

No it is not a usual problem. If you have access to a multimeter, put it in the 2K Ohms range and touch the probes on the two pins of the power cord. It should show a reading between 800 - 1500 Ohms.If it does not show any reading , you could have burnt your standby transformer. Its the small transformer on the power supply board ( Back Left side near the power cord ).It will need replacement.

Mar 10, 2011 | Audio Players & Recorders

1 Answer

Pro sub just shut down no red signal light dead what could be possible problem?

start at the basics, check home circut breaker box, ensure it is still plugged in, check the fuse subwoofer itself. unplug and disassemble, to ensure no moisture or a fried bug is the sorce of the problem, ensure the leads to the subwoofer havent popped off or become crossed, etc etc. hope this helps

Aug 09, 2010 | Definitive ProSub 800 Subwoofer Speaker

1 Answer

Panasonic light at key- pad display.

Sounds like a surge on the power line if the low voltage transformer was opened up, especially if you had a shorted zener.

There may be a voltage regulator bad (5V regulator) or the microprocessor may be bad. Often a blown microprocessor will look like this:


If the microprocessor is bad, it's best to replace the whole boar dif you can get it economically.

Feel free to contact me directly with your brand, full model number, FCC ID number, and remind me of the symptoms. I may have some service data on it and might be able to help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller
Microwave Oven Control Panel Repair Nationwide

May 23, 2010 | Panasonic NN-S635 1300 Watts Microwave...

1 Answer

Will not power up

Go to - knowledge base and replacement parts. Sounds like the Power Transformer.

Mar 01, 2009 | Pioneer VSX-D409

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