I have a black Technics amplifier,SU-X501 and only getting sound through one speaker. Told a channel has switched off,what can I do? Is it poss to switch on myself..have no instructions. Single mum...help!
Make shure speaker wires are not crossed at amp or at speaker terminals. Check balance control is at center. Check sound with headphones to see if final amp to speakers is the problem. Try switching imputs on back panel from right to left see if same speaker is on,.Try all loudness controls and tape dubbing buttons to see if any are dirty.
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If your unit is intermittent, check the speaker wires on the back of the amplifier for stray threads of wire, next! the printed circuit board underneath should be checked for bad or cracked solder joints, finally one more parts are defective, tough problem to nail down, recommend technician.
Being a 500W amplifier, you need to connect speakers with 300W each. The correct method to connect speakers is red terminal of speaker should be connected to red terminal of amplifier & black to black. The left side to left side speaker & right to right speaker. There may be main & remote terminals. Main speakers are the speakers at local place of the amplifier & remote for remotely placed speakers. I do have Technics SU-V85A which is somewhat similar. Enjoy! A nice piece to listen.
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:
Well whatever is playing up sounds like it might be getting too hot to me. In any case it's something common to both channels. Just have a look on the heatsink to see if it uses a single IC for both channels, they are can cause lots of problems!
The IC might be marked STK with numbers after the letters. That is the part number too for ordering a new one.