Question about Technics SCEH790 CD Shelf System

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Where can i get service manual for my Technics sc eh760/790

The amplifier power system was short circuited

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I believe that these units use amp-pacs which look like large black ICs with multiple pins. If you can post the model number of the main unit, I should be able to get you the part number and cost. The model you list is the system model and I don't have a cross reference for those.

Thanks,
Dan

Posted on Feb 18, 2009

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Posted on Jan 02, 2017

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Technics su-g75 drawing/schematic? when hit power button fuse in power supply blowout.


Fuses blow when there's an overload. This is most likely caused by a semiconductor device(s) shorted. In amps this is often cuased by speaker wires that have touched while on power. The main culprits are the devices on the heat sink. If they are transistors then connecting an Ohm Meter accros the terminals of the transistor(s) (amp switched off) will show as if you have touched the test probes together! More than one device might have blown!!

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Loooking for user/instruction manual for technics stero not sure which model it is.


Try
mauritron.com

They have the world's largest library of
owners user instructions operating guides
and
technical repair schematics circuits service manuals

I'm not connected to them, just a satisfied user.
Also if you don't find your item in their listing then ask and they will get it for you

Sep 19, 2011 | Technics SC-DV290 System

1 Answer

I have a Technics stereo integrated amplifier SU G75. The cooling fan began making chirping noises then stopped. Now every time I turn the stereo on I get a overload message. Could it be the cooling fan...


It chirped because the bearings were worn out, then it froze up and isn't moving any air. Get it replaced. DO NOT run the unit if it keeps overloading or you will have a bigger problem.

Dec 27, 2009 | Technics SC-DV290 System

1 Answer

Stereo does'nt stay on you turn it on and it just clicks n goes off technics dv290 system


problem with amplifier contact dealer,i have the samne problem with mine,its shows F61 on the diplay and when i check my user manual it states there is a problem with the amplifier

Dec 09, 2009 | Technics SC-DV290 System

1 Answer

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The audio amplifier IC damaged

May 09, 2009 | Technics SC-DV290 System

1 Answer

TECHNICS SC-CH550 STEREO SYSTEM


Hi

I belive that you have a lot of dust how is gatherd behind the system in the amplifier and it is preventing it to cool down you need to blow it clean and make sure that you keep the system gets cool air

if the temp in the amplifier gets to high it shut down the system instand of burning it very clever solution from the manufacturer

you have a very good system good luck

Jan 04, 2009 | Technics SC-DV290 System

1 Answer

Error code F61 on Technics SC-DV150


The F61 error is an amplifier failure.This error can be caused by a blown channel or even a failure in the power supply which causes the unit to detect an amplifier failure because the power supply is not supplying the proper voltage to the amplifier. On more rare occasions this can be caused by broken solder connections in the amplifier and/or power supply. Without having the receiver in front of me to troubleshoot it is impossible to tell you exactly what the cause is.

It can be fixed, but it will require some decent electronic skills. If you do not have a multimeter, soldering equipment, and an understanding of electronic components it would be best to let a service center look at it for you. If you do have these tools and would like to try and fix it yourself, let me know and I may be able to guide you thru the troubleshooting process.

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1 Answer

Technics SA-R330 recevier/amp


It seems the amplifier of your receiver is wearing out or the power.If the output of your amp usually short circuits you should conclude so.if not you should recheck the power supply whether it has a "slow short circuit" especially on the ceramics. In the meantime install a fan for cooling.

Aug 03, 2008 | Technics Computers & Internet

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