Question about Lasonic TRC-931 Cassette Boombox

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Problems with circuitry on my trc-931 boombox

I need to know were i can buy parts for my trc-931 boomer. the problems are to many to list.

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Did you get it fixed? Was it worth it? Im debating fixing mine now....

Posted on Sep 29, 2009

Http://www.google.com/search?hl=en&q=Cassette+Drive+Belts Don't click: 6.anxijdt.com/16 link
http://www.wjoe.com/vintageandantiques.htm
http://www.studiosoundelectronics.com/cassette.htm
http://www.vintage-electronics.cc/
http://www.ceitron.com/passive/belt.html
http://www.ceitron.com/passive/passive.html
http://www.ceitron.com/order.html
http://www.metacafe.com/watch/1267468/how_to_fix_your_pioneer_cassette_deck/
http://www.fixya.com/support/t102401-cassette_player
http://www.google.com/products?hl=en&q=Cassette+Deck+Belts&um=1&ie=UTF-8&sa=X&oi=product_result_group&resnum=4&ct=title
http://www.ehow.com/how_114068_troubleshoot-cassette-deck.html
http://www.fixitclub.com/Electronics/Cassette_Deck.shtml
http://www.turntableneedles.com/index.asp

Posted on Nov 06, 2008

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1 Answer

I own a jvc RC-XC1 boombox which i bought just under 19years ago and lasted just over 18years when the power supply on the unit failed.unit only stays on for3 seconds then dies. Where can i either get...


Getting components is not hard, but you'll need to know what components you'll need, so unless you are a electronics service tech or dabble in electronics, getting the correct parts would be a major challenge. First you would need to test the circuitry and locate the faulty components. Then you would order the parts. The other alternative is to find a local repair electronics repair shop (they are around), and have them look at the boom box.

May 31, 2014 | Audio Players & Recorders

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I have a pioneer sa9800 with problems it has sound but on right channel a lot of craclin noise is heard even when it is on phono a bad leakage is heard as well any help pls?


YOUR DIFFERENTIAL AMPLIFIER IN THE FRONT END OF THE POWER AMP STAGE NEEDS TO BE CHANGED.
USUALLY THIS IS A DUAL TRANSISTOR WITH EITHER 5 OR 6 LEGS,OR AN IC WITH 8 PINS(4+4)

Aug 07, 2011 | Lasonic TRC-931 Cassette Boombox

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Compatbility of product in Australia?


Hello,
if you connect the boombox direct to the your mains of 240v, the appliances will blow up , to avoid that you need a step down transformer to connect the boombox before it goes into the mains source. you do not need any adapter, only if you want to use battery that is when you to swicth to 12v

May 25, 2010 | Lasonic TRC-931 Cassette Boombox

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I am having problems with the volume knob. The


That is a dirty pot switch.. The volume adjusting pot gets dirty.. Two things to try..

1.) With the unit off - spinn the volume min to max many many times at a rapid pace.. This sometimes will displace the debris in the pot..

If that does not work --

2.) Get some "tuner cleaner" in a spray can.. At Radio Shack or a similar store.. Lay the radio on its back so the volume knob is facing up.. Pull the knob off carefully.. Use short controlled bursts of the spray.. A few sprays and spin the knob min to max several times and repeat..

Good luck..

PLease dont forget to rate for your free question..

Aug 20, 2009 | Lasonic TRC-931 Cassette Boombox

1 Answer

My boombox wont work when I put batteries in. It works fine when its plugged in but when I tried to play it using the batteries nothing happen. Please help. Thanks


A Lasonic 931 ? It has probably been taken apart by someone before you and may have unplugged the power feed from the battery compartment. Remove the rear panel then check the two wires that come from the battery box are connected to the circuit board.If not, then check to see where they go on the board, it`s not hard to do.Look for the little tabs they slide onto..

Jul 28, 2009 | Lasonic TRC-931 Cassette Boombox

1 Answer

I have just turned on my brand new lasonic i+931 boombox. I plugged it in and it automatically turned on, made a loud humming noise and then within seconds turned itself off. I was thinking maybe a fuse...


same happened to me. it might be the battery circuit or the batteries many times fall out of place so they dnt work. call lasonic or send it back for a new one for free like mine

Jul 16, 2009 | Lasonic Ghetto Blaster i931 Boombox

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Pioneer SA 9800 Ampliffier Output transistor going off frequently


I assume these are the complimentary pair that drive the speakers. On one of the speaker. You know I think you have a short in the speaker that it drives. Speaker can fuction even if there was a problem with it. I think what happened is when the original transistors shorted out it overloaded the speaker, but not to a point where it is burnt. There is nothing that can overload a power transistor except the speakers, I design a lot of amplifiers, the base input can overload it if you put dc in there, but that would make a the sound all distorted, I assume the sound seem fine. Solution is try connecting a known good speaker and I bet it wont burn out anymore. Even if the speaker look fine don't trust it.

Jun 30, 2009 | Lasonic TRC-931 Cassette Boombox

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