1554 Ohm In Speaker Caused Low Sound Problem In TV
I have got a call from my friend about problem of low sound from the TV. This is the same TV which I have repaired few days a back for excessive purple color on the screen.
So I have visited his home for troubleshooting the TV for low sound problem. I have turned on the TV & checked sound level form TV itself and from the set top Box, sound level is ok. Then i have found only one side speaker is producing sound and another side it gives very low sound.
I have checked again the setting of the TV and set top box for volume level for L & R audio channel but on variation it did not give positive result.
Hence decide to open the TV and troubleshoot .After opening the TV first of all I have removed the suspected speaker from the TV and connected the left side speaker to the right side temporary for checking.
And by Power ON the TV. I found the sound is ok. That means in audio circuit both the channels are working OK; it producing audio for both the speakers. So what went wrong?
So I checked the speaker with the Multimeter and look what I found! On testing resistance of the speaker coil by Multimeter was showing 1554Ω instead of 8 Ω. That means speaker is bad.
After finding culprit I have replaced the speaker by getting it from the nearby part supplier and fixed the new speaker now problem solved.
This article was prepared for you by Yogesh Panchal who works as a Computer Hardware Engineer in Mumbai India.
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Jestine Yong works as an Electronics Repair Lecturer in Kuala Lumpur Malaysia and his training website is http://www.NoahtechElectronicsTraining.com. You can check out his repair blog at http://www.JestineYong.com
9 comments on “1554 Ohm In Speaker Caused Low Sound Problem In TV”
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Nice finding! Is good to see an old crt tv been repair. Brings me back good memories… good article and success.
Joe
JGA Electronic & Computer Repair Center
Casselberry, Fl-USA
Very good repair!
Good job, Yogesh.
yo tambien estoy reparando una TV de TRC, es LG, Chassis SC-023A, la falla de esta TV enciende y al toque se apaga, ya revisé y cuando está desoldado el Transistor Horizontal enciende y nó se apaga pero al conectar Horizontal no enciende revisé y medí pata 17 IC Jungla 1.5 VCD, pero quito horizontal su voltaje de 8.47VCD y casi ya me doy por vencido, pero quiero repararlo
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I am also repairing a TRC TV, it is LG, Chassis SC-023A, the failure of this TV turns on and the touch is turned off, I checked and when it is desoldered the Horizontal Transistor turns on and off but when you connect Horizontal does not turn on I checked and I measured leg 17 IC Jungle 1.5 VDC, but I remove horizontal 8.47VDC voltage and I almost give up, but I want to repair it
Una vieja TV LG de TRC estoy que reparo es CHASSIS SC-023A enciende y al toque se apaga le quito,desueldo TR. Horizontal y enciende ya no se apaga tiene micr o
MSP3425G B8 V3 Y su JUNGLA es LG8023-54C casi ya me rindo
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An old LG TV of TRC I am that I repair is CHASSIS SC-023A it turns on and to the touch it turns off I remove it, disown TR. Horizontal and turn on no longer turns off has micro MSP3425G B8 V3 And your JUNGLE is LG8023-54C I almost give up
you ‘re execellent,am able to follow tips on how to troubleshoot electronic items with your easy guide to follow
Good repair Yogesh. Congrats.
Thank you so much Engineer.
thanks very much for your help.