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Shut down-turns off after few minutes

I have an SU-G70 Technics Ampilfier. It stared out by working for hours, maybe all day, then it would just shut down, completely off. Now it's to the point it will only work for a few minutes before it turns itself off. I could get it fixed locally if I could get a schematic sheet on it. Or, if anyone has a suggestion I'm open for it.

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  • mistapatch May 27, 2009

    Thanks for your reply. I was afraid of that. I have heard that the older units are repairable. Is the unit worth fixing and are parts still available for it? Or, can new updated units be found?

    Thanks Sam

  • Evans St. Romain, Jr.
    Evans St. Romain, Jr. May 11, 2010

    These things are susceptible to heat. Sounds like after it gets hot, it shuts off to protect itself from burning up. Sounds like it's done it so many times it's burned now and won't stay on any more. Have you tried running it where there is good airflow or maybe pointed a fan at it? Sounds like it may be too late but try it again where it can stay cool and see if it makes a difference.

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SOURCE: Panasonic CT-32HX42F Powers down by itself

it is due to plug or socket loose or sparking in that area. if it is ok then it is due to some component failure in power supply of tv. as per schematic is concern please go to. www.serviceinfo.com go in search & give model no.it is freely available.

Posted on Oct 06, 2007

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SOURCE: T V Shuts off by itself, after a couple of minutes.

Hi there,
here is some tips for ur TV which blinks 4 time.
1 Probable
Cause
Location


Solution • +13V is not supplied.
(A Board)
• IC503 voltage list is faulty.
(A Board)

Detected
Symptoms


• Has entered standby state
Solution after horizontal raster.
•Vertical deflection pulse is
stopped.
•Power line is shorted or power
supply is stopped.


this info must remady ur problem.

Posted on Dec 25, 2007

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SOURCE: closing itself down DEW

camcorder when turned on flashes in red DEW and closes it self down. i have taken all the batteries out and replaced sometimes after a few days the camcorder will work then DEW will rea ppear and shut itself down

Posted on Jan 05, 2008

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SOURCE: Technics SU-G70 clicks but doesn't display or sound

I just got mine back from repair shop, same symtoms, they replaced power supply, in your case it was hit and miss for a while, so maybe bad power supply connections inside.

Posted on Jan 18, 2008

  • 106 Answers

SOURCE: over heating

make sure there is nothing within several inches of it to start off. if need be, use a small house fan pointed at the amp to help cool it, if all else fails and/or you don't want to hear the noise from the big fan; get a computer fan the same size as the one in the case. connect it in place of the fan that does not work(may have to cut/splice the wires). that should work. oh, check the voltage and whether the fan is AC or DC from the stereo. this makes a huge difference!!!! if the fan says "DC" DO NOT CONNECT AN AC FAN TO IT!!! the fan will short and BLOW UP!!!

Posted on May 23, 2008

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