Question about Samsung SyncMaster 750S 17" CRT Monitor

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C 5802 always burn out after replace - Samsung SyncMaster 750S 17" CRT Monitor

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Caps burn out 'cause they HATE reverse polarity, so ya getting AC or Ripple from somewhere to that Cap... find out why and that may fix ya problem

Posted on Jul 15, 2007

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Posted on Jan 02, 2017

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Hi my adcom 5802 get right Chanal not working . I don't know why every time I put 2 fuse for that Chanel is burn st thing look like diot ... And after that 2 fuse burn too


If I can read you right you are saying that the device keeps blowing the fuse?

Fuses blow when there is an overload. As it is an amplifier we are dealing with the cause is more than likely a shorted output transistor or more than one, or whatever does the main amplification for the device. These devices are located on the main power amp board attached to a heat sink. If the amp has fuses for each channel then you only need to replace the devices on that channel, with the fuses blowing on it. The cause of shorted devices is often bad speaker wires or them touching.

Nov 21, 2015 | Adcom Audio Players & Recorders

1 Answer

Adcom amp 5802 running hot


It should run hot to touch at idle, about 120F, because it is MOSFET type amplifier.

Mar 23, 2013 | Adcom GFA-5802 2-Channel Amplifier

1 Answer

Free user download manual for singer 5802 sewing machine


http://www.singerco.com/uploads/download/40d02dcef52b11ec3904ef69df470b20995e3b02.pdf

Aug 18, 2012 | Singer Sewing Machines

1 Answer

Copy quailty back ground .fixed new dev .toner always not stop .


look my dear try to first step make free run via 5802 sp 2- clean drum unit carfully throuh clean cleaner drum attention: free run make it 100 sheet but i don't under stand yo in last sentence ( fixed new dev toner

Feb 05, 2011 | Ricoh Aficio 450 Copier

1 Answer

Error code 277-5802


what i can tell you is that there is a comunication problem between the printer board and main controller. the only suggestion i have for you is to call for service and have someone come out and check all the boards. unless you know how to remove them and try putting them back in

Jan 28, 2010 | Canon imageRUNNER 8500 Copier

1 Answer

I turn on the ADCOM GFA-5802 amplifier... ...The power light comes on, but does not heat up nor output sound


Have it serviced. Do you know what GFA stands for. People at Adcom do have a great sense of humor. Take it only to a high end audio servicer. Contact Adcom. This is good stuff you wouldn't want a hack working on it.

Nov 23, 2009 | Adcom GFA-5802 2-Channel Amplifier

1 Answer

Can you bridge an adcom GFA-5802 power amp?


Running an amp in bridge mode requires a specific circuit design. It is not possible to combine 2 amps in this fashion.
Dan

Mar 02, 2009 | Adcom GFA-5802 2-Channel Amplifier

4 Answers

ADCOM GFA 5802 POWER AMP NO SOUND, BUT POWERS UP.


Remove the output transistors and measure each of the sets of 3 pads and report the voltage readings here. I suspect that you have either a blown driver circuit or output transistors. The voltage readings will give me an idea on where to start looking for specifics.

Thanks,
Dan

Nov 11, 2008 | Adcom GFA-5802 2-Channel Amplifier

1 Answer

Bi-amp


After examining a picture of a 5802 ( I have been servicing adcom for over 20 years ), these are not bi amp posts, but bi wire posts.

Bi-amp means that 2 amps are being used, one for highs, one for lows. This means that you have no crossovers in the speakers, instead, you have an electronic crossover between the amps and the pre-amp. The highs and lows are separated in the electronic crossover. One amp handles the lows, one handles the highs.

Bi-wire means that you have the crossovers still inside the speakers. The amp handles the full range of music ( highs-mids-lows ). Different kinds of speaker wire produce different results. If you have bi-Wire terminals on your speaker, they come with shorting wires, that tie the tweeter + to the woofer + on the back of the speaker, and the tweeter - to the woofer - . When the shorting wires are removed completely, you have now electrically separated the tweeter and woofer from each other, while maintinaing the crossovers ( inside the speaker ) for each.When this is done, you can now bi-wire the speakers and amp, and use different kinds of wire for the lower frequencies and the upper frequencies, depending on your ears ( everyone hears a little differently, thats why there are so may makers of components, and wire ).

Why do we have crossovers?.....the tweeter voice coils ( the things that make the sound ) are made of hair thin wire. This wire cannot handle much power and if you were to put bass in to a tweeter, you would burn the tweeter out almost instantly. A tweeter is a very light, fast moving device which can react very quickly to high frequency sounds ( symbols, triangles, guitar strings....). Woofers are more rugged. They have voice coils made of heavier wire and are designed for larger movements that Bass demands. Subsequently, woofers aren't very good for high frequencies because they are slower devices.

So what do we do ?.....Keep the lows away from the tweter and the highs away from the woofer.....thats the job of the crossover.

In the event that your speaker has the crossover OUTSIDE the speaker box, you should check ( as always ) with the manufacturer of the speaker to see how it can be changed to suit your needs. Remember to always read and follow your owners manual. Good luck....Rob

Feb 22, 2008 | Audio Players & Recorders

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