Question about Technics SA-EX320 Receiver

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I have no sound in teh left channel , could be an integrated ?

How can I know which integrated are damaged in order to change. I use the component with one channel but overload signal appears. an dthe sound cut.....I apreciate very much your assitance.

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Take the cover off and look for fuses. sometimes manufacturers fuse the output wires. if not, look for anything burned where the wire connect

Posted on Apr 09, 2009

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Hey, The model of the amplifier is SU-G91 Technics.....If you could help......Thank you.

Posted on Apr 09, 2009

  • David Earl
    David Earl Aug 07, 2011

    I just found the whole system @ dumpster side. I had the same problem. On mine, there is a problem with the block that the speakers all plug into. I applied pressure and the speakers work. Not permanent fix... but I'm using it with A and B speakers. Now to hook up the rear and sub channels. Fiddle with it and see.

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Posted on Jan 02, 2017

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Getting sound and channels change but screen is black


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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if you switch the speakers, the sound goes to the right? if yes, your amplifier will be damaged. if not, you speaker or speaker cable is damaged. If you don't have the skills to repair an amplifier, don't even open the thing. Just visit a repair centre, to limit the damage (and costs for repair)
Manrantz often uses components with different (own) codes, so it could be difficult to replace any component you find defective. Without a service manual I even would not start a repair.

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CABLES ON ITEM ARE IN WRONG ORDER, TO TV ITEM IS SET FOR A DIFF DEFAULT CHANNEL, TV'S R CH 3 OR 4 AND MOST OTHER DEVICES TOO! MAKE SURE THEY ARE BOTH SET TO SAME CH. MIGHT BE WRONG CABLES, 'RCA'S ARE NOT TEH ONY INE NOW,. THEY HAVE Py Pb ETC. CODES TOO - WHAT INPUTS ARE YOU USING, VIDEO IN? COMPONENT? DO TELL

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I have not received a diagram of my stylus wiring. none of the sites that was recommended have helped. do you know the purpose of each color of the four wires?


One is earth for the right, one is earth for the left, one is right channel and the other is left.
You don't need to know the colours to find the left and right channels. Just connect the turntable to the amp switch on. Then with your finger touch each wire one at a time. One will buzz on the left the other will buzz on the right. You might even get a slight buzz from the two earths.
The cartridge might have the left or right channels marked so you can connect them, but if it doesn't just connect the left to one side and the right to the other, then do the same with the earths. try it out, if the channels are the wrong way round change them, if the sound doesn't sound right change them again and again till it sounds right. You won't damage the amp or cartridge from doing this. Unless it's some kind of static effected cartridge!

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I have a Technics SU-V460 integrated amplifier, and the left channel (speaker) keeps "dropping" out . I have to turn the volume right up in order for it to "kick" back in. Would this be...


There are three possible problems with your system. The first, and cheapest to fix, is that the wire connecting the left channel is faulty. To test this, unplug the wire from the back of the amp and put a new one in, then play some music BEFORE putting everything back into it's respective place. If the speaker doesn't cut out anymore, problem solved! Speaker wire is very cheap too. If the problem persists, try connecting one of your other speakers that you know works to the input. If that speaker cuts out as well, then the amplifier is the faulty component. That will cost some money to repair (between $50-$150 depending on where you go, excluding the price of a new amplifier). If the speaker you know is not faulty works when plugged into the left channel, then the only other option is that the original left channel speaker is faulty. This could cost between $25-$100 to get repaired, excluding the cost of a new speaker. It will not be as costly as a new amp, but will definitely cost more than a new speaker cable.

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I have a 1975 Sansui Integrated Stereo Amplifier and Left Channel on System A & B are faint and Tinny as if Left Channel in System went out. I swapped speakers from right to left channel and same...


It's likely there is a fault on the power amp. This is located on the heatsink. A visual check inside the unit might be what you need. Look out for blown parts, bulging capacitors or burnt components. Remember the two channels are generally separate and identical. So identify the two channels. Work back from the speaker sockets if you can't tell. Then compare the left channel parts with the right side components. If it looks odd on the left compared to the right you have found the problem.

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Necesito saber si tiene doble tarjeta de sonido


No solo tiene una.

Graphics Controller
  • Type Integrated
  • Graphics Processor / Vendor NVIDIA GeForce 7050
Audio Output
  • Type Sound card - Integrated
  • Sound Output Mode 7.1 channel surround
  • Compliant Standards High Definition Audio
  • Speaker(s) 2.0 x Right / left channel
Keyboard
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Input Device
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I have a Marantz PM6010SE K1 signature amp - just for listening to CDs, if anyone remembers them. The amp creates a low level (mains) buzz in the left speaker. If I turn up the volume to max the low...


Use on the control buttons and other switches balance contact spray as the first step let it work for a few minutes.
Control the print for some loose components (solderings) by carefully some manipulation and movement on print and components with a wooden or plastic object, because solderings on active heat-conducting components have allways high priority on the end stage, and in power supply primary you can become early loose components in the solderings if the manufacturer has used leadfree solder. If you have after this no improvement then ALLWAYS refer the damaged to find components replace always twice (on both sides) each other replace if a damaged deformed capacitor or diode was found both as well left as right the same brand components , be carefull in replacements its very important because of in most repairs refurbishing for tonal influences Passive components as example (only suggestion) to take a capacitor 10Volt 330 MF then replace it for a 16 volt 330 mf the size should in most case be the same of the component its very important for tonal effects and balance, in most repairs is that more size format on capacity sounds better as the new order components become smaller on the same voltage its better to get the higher voltage capacitors with the same size as the old lower voltage ones.

http://akdatabase.org/AKview/albums/userpics/.../Marantz%20PM6010F%20Service.pdf

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matelectronics.com and audiolabga.com carry many good replacement transistors.

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