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I Have a Technics PR-305 Digital Piano that I have and really like. I went to play on it on October 12th. Certain notes with different chords weren`t sounding.

it can be repaired or replaced if the boards are still available
Take it to an authorized service to have it repaired and failing that some shops that repair micro wave ovens have the technical ability to repair items of this nature
may be a good radio technician or radio repair shop could also do the repair as it is basically an electronic ( wireless/radio) that is controlled by keys

Oct 14, 2015 | Music

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I have a Marshall VS65R amp that WAS working great until someone tried to daisy-chain another amp via the headphone jack and a couple circuts on the board cooked and look burnt. No sound now. Is it wo

Assuming the repair is beyond what you can do yourself, I'd estimate the cost of repair to be $75-100. You'd have to decide if it;'s worth it to you or if you'd be better off appling the funds to a new amp. If you liked it before it blew up, I'd get it fixed.

Nov 10, 2014 | Music

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It got peed by my cat now 5 keys does not work what to do pls help

Sadly, when the circut get damaged by a fluid, it typically has to be taken to a local professional so that they can pull the board out and run tests on it. This is a very intensive process because each componant within the questionable area of the circuit needs to be tested for weaknesses or damage. Most of the time you will pay more for labor than parts, if you want the unit repaired.
I recommend getting a quote and keep your mind open to replacing this unit due to the repair versus replacement.

Aug 29, 2011 | Casio Ctk-5000 Electronic Keyboard Piano...

1 Answer

My stratocaster wont do anything i think my mid circut board went out where can i buy just the board ive checked all my wiring and its good

Don't replace the board. Have a competent person check for bad component and PRAY it is not one of the pickups. Common failures are JACKS, POTS, and switches... they are cheap...Bad solder is common and it takes a trained eye to spot the bad joints. Heavier components are the ones that break loose.

Apr 22, 2011 | Fender Mid Pickup Assembly for Mexican...

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Hey, I have had used the Roland PD8's for a while but recently 2 of mine have just stopped working. Maybe I hit them too hard but I'm not sure because the rest of my pads work. One will work if I hit it...

Check the connections on the undersides of the pads--they sometimes get loose as the vibrations rattle them around. Tighten the nuts that hold the pads inputs in place and reinsert the cables until they sort of "click." If that doesn't work, it might be the cables themselves, so try switching them with one you know is currently working. It'll change which sound is triggered where, but you'll know it's just the cables that need to be replaced, not the pads.

Feb 18, 2011 | Roland Pd 8 Dual Trigger Pad

1 Answer

I have a Behringer eurorack ub1002 mixer. how can i open it up to fit a new socket on the face of the desk. I seem to have unscrews all the screws

One has to remove all the knobs, including the faders. There are MANY screws through the panel AND all the 1/4 inch jack hardware has to be removed. Remove EVERYTHING else BEFORE removing the small screws... It is a LOT of work, although this mixer is small compared to some! Be careful to NOT scratch the circuit board as Behringer uses very small/narrow circut traces that are easily damaged. Make sure you have the EXACT same socket so it not only lines up with the holes but is the right height from the circuit board, Temporarily mount the socket along with the mating ones before soldering the pins so it is in perfect alignment to fit the hole in the panel.

Jan 25, 2011 | Behringer Xenyx 1002fx 10-input Mixer W/...

2 Answers

My behringer pmp3000 has circut board damage(some burnt spots) on the speakon connections board and the amplfiers board. it does not seem to power up(no lights). are these parts repairable or replaceable,...

i own and at this moment have a behringer opened up because of the same problem you have and ill tell you that 6 electronic shops and all the guys at the forum have not successfully fixed these mixers and its not that its difficult its a manufacturing design flaw in the second board at the output A and output B ports inside the mixer.this board which processes power output from the mixer console out to speakers cannot handle the dual 600 watts (1200 total watts) that is running through it and blows the main coils if you replace the coils it will blow when and if you hit a low/high frequency and it usually happens in the middle of a show when you up the bass or the highs which cause the main transformer/resistors to process too many watts to the coils,either the resistors or the coils blow so the guys at the music/electronics forum are exactly correct but you can get the main board for $44.00 at amazon or ebay so you wont have to spend time and money replacing resistors etc

Dec 26, 2010 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer


The way you troubleshoot these problems is to use a current limited power supply to drive say 1/2 amp into the circuitry. Then you use a millivoltmeter to find the point where the tiny voltage developed across the short goes to zero.

Sometimes you can monitor the tiny voltage and use freeze-mist to cool suspected components and look for the tiny change that occurs with temperature change.

I have other methods but they use expensive probes that you can actually follow a pulse on the current path to the short.

Oct 08, 2010 | Music

1 Answer

I have a chauvet ch-215 mini line dancer that lights only. It no longer moves or runs the fan to cool the light. My question is where should I start looking. Is it most likely the circut board ?

It sounds like you have a power supply problem. If you have some electronics background, take a look at the power supply and see if there are any caps that are bulging on top. That means there bad. Always replace with same values. Check all diodes,see if anything looks like its got hot or burnt. Trace back where the fan is soldered to the board. Try to fellow the traces to see what component they lead to, maybe a voltage regulator. Oh... do all this with it unpluged. If your not sure about doing this maybe you have a friend who knows a little about electronics and can replace components and solder. Well, I hope this is helpful.

Oct 27, 2009 | Music

1 Answer

I need this circut board for my Yamaha dx7 IIFd the part number is NA109720. It is called aftertouch circuit board

If you have a board that is bad, repair the board as piece parts of older synths are hard to find. The question is what is wrong with the board? If it is the pressure sensitive part and is not cracked it MIGHT be repairable.

Jun 08, 2009 | Yamaha Music

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