Hi.
I got this Technics SU-VX800 from a friend, he was going to throw it.
At first the power button was not working, i thought hey, easy fix.
Replaced the power button, it "turns on" but the "current drive" lamp is not on, so the amp does not work.
I took a closer look, found the four power transistors on one of the channels had a short circuit.
Replaced these. Still no difference.
Took an even closer look, found four burned resistors and a little capacitor, i also noticed the soldering around one of the four
small transistors who usually gets hot, were loose..
I then replaced all these components with new ones, four resistors, a little capacitor and also the four "hot" transistors just because i could see they had been so hot.
Got it back together, turned it on and hoped for the best.
The current drive lamp did not light up, and then my new resistor at R414 started to smoke, followed by the new capacitor at C405 blowed up.
So i turned it off, hehe.
Is there a Technics specialist here.. who could give me a tip about the next thing to check.. or so...?
Would be very appreciated!
Would have been fun to get this thing up running without leaving it to a service workshop.
I got this Technics SU-VX800 from a friend, he was going to throw it.
At first the power button was not working, i thought hey, easy fix.
Replaced the power button, it "turns on" but the "current drive" lamp is not on, so the amp does not work.
I took a closer look, found the four power transistors on one of the channels had a short circuit.
Replaced these. Still no difference.
Took an even closer look, found four burned resistors and a little capacitor, i also noticed the soldering around one of the four
small transistors who usually gets hot, were loose..
I then replaced all these components with new ones, four resistors, a little capacitor and also the four "hot" transistors just because i could see they had been so hot.
Got it back together, turned it on and hoped for the best.
The current drive lamp did not light up, and then my new resistor at R414 started to smoke, followed by the new capacitor at C405 blowed up.
So i turned it off, hehe.
Is there a Technics specialist here.. who could give me a tip about the next thing to check.. or so...?
Would be very appreciated!
Would have been fun to get this thing up running without leaving it to a service workshop.
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