Question about Technics Audio Players & Recorders
Posted by Anonymous on
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Posted on Jan 02, 2017
This maybe due to overheating of some Sort.
Try taking it out of where it is where theres a good flow of air.
Then try running a cd.
Try Putting in a Cleaning cd, this maybe a fault with the laser.
Posted on Jan 05, 2008
Cleaning the laser as you rightly say will not solve your problem. I have a Technics SL-PS700 which although quite ancient by todays standards also had the same problem as yours I have however fixed it using the same principle I apply to DVD recorders, playstations, Xboxes.
The operating frequency of the laser is set to a usable level by the manufacturer and over time the power tends to reduce. Other than replacing the laser unit which can be expensive, an adjustment to the laser needs to be done.
I'd recommend you get hold of a service manual first but it may not be necessary. If you are happy to get your hands dirty and are confident enought ot open the player, You'll need to get to the underside of the laser unit which normally means the whole CD tray mechanism needs to removed.
Not as scary as it may sound as long as you A - make notes of how it all comes apart by writing down the disassembly steps or/and take photos of the stages.
Underneath the laser unit you should find what looks like a little screw. This is infact a potentiometer this controls the the power of the laser. A pot tool (plastic should be used to make the adjustment but if you are careful a small slotted screw driver will do. Turn the pot one eigth of a turn clockwise this will raise the power slightly. Now test a CD to see if it plays. I don't reassemble until I can get a disc to play Just avoid looking at the laser unless you want to damage your eyes. Normally on turn does the trick and the CD will play once more.
Some say this shortens the life of the laser but that is only true if it is over adjusted. The manufacturer builds in an adjustment factor to enable service engineers to do this. In a workshop environment an engineer would use an oscilloscope to visually check the frequency according to manufacturer guidelines but these lovely pieces of kit are beyond most of us cost wise. If you require more clarity let me know
Posted on Oct 23, 2009
Web search "Technics SL-MC3 manual" and this pops up...
Please try the search engines first.
Posted on Aug 08, 2011
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