20 Most Recent Technics SUV500 2-Channel Amplifier - Page 4 Questions & Answers

This appears to be a tough one to find for free. There is some info out there - but it will cost a few bucks. The service manual or sometimes called a "shop manual" is for those that work on damaged units - and is probably over the top for your needs. The operating manual or owner's manual is likely the same as the one that came with the unit when new. Either can be had at the site below for $15 and $10 respectively:

http://www.manuals-in-pdf.com/index.php?main_page=advanced_search_result&keyword=Technics+SU-X501+manual&forward=plist

I am not affiliated with this or any other site that charges for manuals, tips, advice, etc.; and only offer it as a source for the info you're looking for. I hope this helps!

Hi,

For the D and C types you have to put 2S for it.
So that would be 2SD1265.

Regards,
Gerard

Hi
One of the amplifiers is shorted. Take to a reputable repair person or check www.micromendllc.com

Hello,

if its overloading, reduce the amount of speakers connected to it.

Or you can get a small fan and direct it to the Amp while its working, in order to cool the Amp and avoid it from Overloading.

Try facing a fan towards the engine and you will see that it will make a great difference.

Good luck.

The amplifier ic is probably damaged!
Check voltages and solder connections to verify.

check that power amplifier rating(how many watt)must be more than total speaker rating by 20% at least..
exampel:if speakers watts are 100 watt-amplifier watt must be 120 watt.

some technics models use hybrid o/p i.cs and when they go faulty shutdown the o/p to both channels. it is also possible that the fan not working can also cause this fault

test you speaker maybe there is a bad connection some where is the spk. box its self ,try changing speakers left to right .
it the spk. are ok open amp see all the connections within the amp .
if this dose not work contact me by mail: [email protected]

first dose your amp have 2 or 4 outputs if 4 outputs you have to have 4 speakers ,and connect them on your amp speaker output is that so hard to do ....

1-amplifier power must be 20% more than total power of loudspeskers(if total lodspeaker power is 8 watt-amplifier must be 10 watt).
2-all input and output cable must be in good condition(no short or touch between wires inside it.
3-input signal must be(between -10db and 0db)

take the cover off and use some wd40 and spray the volume control to clean out the dust buildup.. also it wouldnt hurt to get the other controls while you are at it... good luck..

Is the aux imput for tape or cd only? Or is it a dedicated phono imput?
If it is for tape or CD only it won't work has the cartridge from the deck needs a magnetic pre-amp.
If the amp doesn't have a phono imput you can get a pre-amp for cartridges from your local electrical shop. This will plug into your deck and then into the socket of the amp.
If the aux on your amp is a phono socket, assuming the record deck is working, then the pre-amp (inside your amp) for the cartridge has failed. It generally is located near the imput socket, chances are it will be single IC. It's a fair bet the IC will have failed, they tend to be static sensitive types prone to fail at the drop of a hat!

Go to the following address:
http://safemanuals.com/user-guide-instructions-owner-manual/TECHNICS/SU-VX500-_E
There you will find both the user's manual, and the service manual for the Technics SU-VX500 receiver.

The most common cause of this is defective coupling caps inside. These allow some DC voltage to pass through to the final amp stage. This DDC voltage is detected by the protection circuit and the unit shuts down. This unit will require service. Please note that this should be a simple and inexpensive repair. The cost should be less than $10 for parts.

Dan

This can be obtained from:

www.hifiengine.com

Dan

The power amp section is bad or in protect mode.(shorted speaker wire)
Paul