How to fix the lights on a technics SA-700
From what you have told me you are having a problem with the speaker itself, if the same speaker's volume is low no matter which side it is connected to. . I am not sure if the speaker box that you have can be opened or not. If not you will likely have to replace the speakers. The static in the volume controls can normally be corrected by spraying them with a control cleaner and working the knobs back and forth to the stops at both ends while the unit is unplugged. This cleaner can be purchased at most Radio Shack stores. The hum is an indication of a ground not making good connectionYou'll want to check a few things, and the probably post back to get more info.
It sounds like the most likely culprit is that your e-violin (was it a
pickup or a true electric violin like a zeta etc?). Very likely your
electric violin produces more current than the input was expecting
(phono expects very little - which is why you frequently seem to be
getting more volume than you did when put it into another input).
Check the following:
1.) make sure your tape monitor switch is the correct position. Not
likely this, but gotta check it!
2.) Do you have a jumper cable running between you "pre out" and your
"main in" on the back? If not, this is your problem. Its unlikely
that this is it, since it would not have worked in the first place
without the jumper unless plugged into an external amplifer.
Those are the most likely super-easy-to-fix problems. On to the next
round if no fix there.
3.) Check to see if you get sound through headphones. A yes or a no
will help locate the problem at a particular junction in the
circuitry. If you don't here anything in the headphones, crank up the
volume and see if you hear a faint version of what you're expecting to
here (do this with a CD or something that is not your violin :) )
4.) Do you hear a click right after turning it on and then another one
about 2 seconds later?
5.) There are three fuses in your Technics unit. Check them all!
They are located right next to the power supply on your unit - all
fuses in the unit are right there. Unfortunately, technics at this
time used in-house fuses and i don't think they are as cheap as a fuse
ought to be.
You'll want to have blown a fuse, prefer to have not destroyed a input
or output. All of these are possible!
Nov 21, 2011 |
Audio & Video Receivers