DC bucking convertor noise. Ok if I recap a 8uf bias cap with Where would be the best place to Magnatone Custom M Sunn Concert Bass wonky voltages. Use this control to limit the display of threads to those newer than the specified time frame.

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amplifier repair forum

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Amplifier Repair

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JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Amplifier Repair Hide sidebar Show sidebar. Thread starter Headfoot Start date Jul 11, Headfoot Junior Audioholic. Hello, this is a rather specific question. For anyone in the greater Twin Cities area Minnesotawhat is a trustworthy place I can get amplifier repairs done? I know that Midwest Speaker Repair is the place for reconing, but Google isn't helping as much as I would like on the amplifier issue.

Headfoot said:. I bought it on eBay and the guy was a liar; the listing said the item worked fine. It crackles, hisses, and the left channel doesn't work at half of the volume settings it has a left and right channel volume control built in. It's supposed to put out watts per channel into 8 ohms, but it can hardly put out 40 before it starts having problems. Up to about 40 watts it sounds absolutely terrible, the highs are very harsh and there is no bass.

amplifier repair forum

I'm trying to get money from the guy for the repair since he lied to me. I just need to know where to repair. When it comes to electronics, I have absolutely no grasp. I connect a battery to a lightbulb and think that that's great. That is weird, that would explain things though. Thanks again for the help, now I just need to see if this guy will pay the price. I'll call down to Hi Fi Sound and see if he'll do it, and if not I'll call the Kenwood service centers and see how much it costs.

I'll keep you updated. Last edited: Jul 14, B3Nut Audioholic. You might want to join www. They'd be able to point you to someone, though it might not be local.Latest Projects Education. Technical Repair Some guidance on high end audio amplifier repair? JavaScript is disabled.

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Thread starter hspalm Start date Mar 13, Search Forums New Posts. Thread Starter hspalm Joined Feb 17, Hello all forum users. After repairing a couple of my colleges tv's by simply replacing bulging caps on their power supplies, I got thrown this massive amplifier at me to try and fix.

The message was "either you fix it, or I'll throw it", and I like a challenge. I'm mostly fond of digital electronics, but I do know some basic analog and thought this might give me some valuable experience, if I got it to work.

The amplifier is made in Norway and weighs at least 20 kg, no information to be found online. One of my main concerns is that it is normally driven by a preamplifier, which I don't have. The input signals connects by a XLR connector.

To test the amplifier of course not final test to trace and detact signals on the PCB, is it okay to use my signal generator positive on the positive polarity terminal of the XLR, and the signal generator ground on the returning terminal?

I guess you need to know what the problem here is, and it's really just one dead channel. Completely dead. So far I've identified the power supply, and each channels amplifier PCBs with the driver transistors and output transistors. Any hints or tips before I go further on this! Thanks in advance! Scroll to continue with content.Log in or Sign up. Marshall Amp Forum. The Amps. Marshall Amps For discussion of Marshall amps; i.

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Some guidance on high end audio amplifier repair?

Search Advanced…. New posts. Search forums. Hartke Bass Amplifier Repair. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Geri O'Neil Sophomore. Jan 11, 0 0 US. We have a Hartke Bass rig in our meager backline inventory and the amplifier has developed a problem. The local repair guy, who is really good, says that parts for this unit are no longer available.

Is the factory closed? Does anyone know of a shop capable of repairing these things?

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I meant to post this while I was at the shop, but I had to leave unexpectedly to put out a fire and I don't the model of the thing, except it has a sort-of graphic EQ with neat little LEDs on the fader knob. I can get the model of the thing in the morning, if it will help.

Thanx, Geri O. David Morison Freshman. Aug 21, 7 18 Aberdeen, Scotland. Aaron Hammett Freshman. Nov 21, 72 0 0 Dayton, OH. You must log in or register to reply here. Top Bottom.


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