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Needed to replace a defective REGULATOR TOP 245Y

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What is the question?
The substitutions,where to buy, or ...?

Posted on Sep 02, 2015

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I had Mackie th15a 110vac and it had busted fuse, when i replace it when a new one it got busted again...i plug the power cable to 110vac without a regulator. what would be the possible problem in the...


If fuses keep blowing there clearly is something wrong with the power amplifier. You can start by getting access to it and doing a visual inspection for signs of overheating or short circuits but then it will be necesary to check parts and eventually you will be able to isolate the defective part(s) and repair it.

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One of my Fender Passport 500 speakers has started to crackle sometimes, particularly when the song has a lot of base. What could be causing this? Would a regulator help?


You have probably blown the speaker... swap left and right to verify it is the speaker... These speakers are NOT too well suited for bass... They typically have low impedance speakers in series. You run a risk of popping the amp running with a blown speaker. You MAY have to replace all the speakers in the defective cabinet. ALL the speakers must be identical. The Passport 250 uses four 2 ohm speakers in series... not sure about the 500. It may have two 8 ohm in parallel. Do not use the speaker until it is fixed... the amps are hard to repair if a defective speaker cooks them.

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I bought a Behringer Xenyx 2442FX Board on Craigslist, knowing that it wasn't powering up, but figuring that it was just a bad fuse and the guy didn't know what he was doing. I was wrong. ...


The C23 part is a capacitor and the 7085 is more likely a 7805 which is a voltage regulator. The regulator is easy to find. For the capacitor, you will need the service manual to determine the value required. The main issue is that the leg of hte 7805 is lifted. This implies that the part was conducting more current than expected. This is an indication that the problem with the regulator is a RESULT of a problem, not the defect itself. I would not suggest replacing the power supply blindly as the root cause may beon another board. Just changing the power supply board may result in the same problem again.

I would suggest a trip to the repair shop to get a detailed repair estimate. The shop shouldbe able to determine whether or not the only issue is the power board.

Also, from the experience I have with Behringer units, the power boards are unique to each model.

Dan

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My schott ceran induction stove switches off after some seconds. how can i keep it to stay on and cook?


Induction stove tops turn on and off to regulate their heat output. They will only stay on if the highest temperature is chosen.

Mar 01, 2011 | Music

1 Answer

In play mode the sr 16 goes beserk. It makes a pulsed buzzing sound and plays back the drums distorted. any ideas?


The SR-16 uses an external transformer as the power supply which provides 9 volts AC. This ac power is converted to DC positive and negative voltages for the digital and analog portions of the circuit. Although the unit has been reliable generally, this symptoms sounds like of of the main filter capacitors in the DC converter circuit(rectifier, filters and voltage regulator) has broken loose or is defective. This will affect both channel equally. If the problem is in one channel, a broken shield on a cable or the output jack ground connection might have broken on that one channel.

Jan 22, 2011 | Alesis Sr 16 Stereo Drum Machine

1 Answer

I cant plug my 120v input vamp2 power adapter into a 110v output voltage regulator its dont works


I don't understand why you are plugging this into a 110 volt regulator.. If by chance you are trying to run this from 220 volt power, you DO NOT use a regulator or a converter intended to run hair driers and appliances. You need to use a step-down transformer from 220 to 110 or 240 to 120.
The V\Amp2 is a switching regulator and it will NOT like to be run from another switching regulator such as found in those cheap appliance type convertors.

Here is the type you need: http://www.world-import.com/tc-100a.htm

Jan 07, 2011 | Behringer VAmp 2 Power Supply

1 Answer

My 800-rb won't power up.Nothing lights up...checked fuse and its ok.


Starting point is to open the unit and verify first that the +/- 60 volt power supplies and the +/- 85 volt supplies are producing.

Next check the +/- 15 volt regulators.

You will likely find one or more of these supplies are defective.

Cause could be blown parts or cracks in circuitboard or bad wiring.

Jul 12, 2010 | GallienKrueger Gallien Krueger 800rb

1 Answer

It will not work what colud be wrong


its a crate. 60% of all crate amplifiers go back on defects. take the top screws out and slide out the chasis, look at the fuse and determine if its toast. if the fuse is good, get a new amp. if the fuse is bad replace it and you should be good. the circuit board will have the correct fuse to be used printed on the board.
yostamplifier.com

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2 Answers

I have a Casio PX-310 on the service bench . I


As you probably know the regulator also supplies power to the other ICs on the board. If the fuse keeps blowing that means that one of the parts drawing power is shorted. By looking the pin configuration up for each IC you can find which one is the + and which one is the- etc. The faulty IC will be showing voltages on the other pins where they shouldn't be. That is usually the defective part. You will also want to check parts that are related to or in the same circuit. The worse case scenario is that the main IC is shorted. Without the schematic its a long arduous troubleshooting procedure but it can be done and I just thought I would suggest it. I mean know pffence and just wanted to help somewhat.

Jul 09, 2009 | Music

2 Answers

Burnt out my boss BR 1180. How do I repair?


I'm not sure which entry will get to you, so... The likely defective part is the voltage regulator. This should be fixble by any shop that handles audio gear. No special test equipment or parts are required. The regulator circuit should be fairly standard and simple. Where are you located so I can recommend a shop? Dan

Jun 16, 2009 | Boss Micro BR Digital Recorder

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