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Saying scan everytime tv switches on

I have a jmb tv, when i turn it on it says scan do not tun off power, reaches 100% then starts over and is written upside down, takes several attempts of turning on and off before it goes

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Just been told by the makers, its the power board that has an update chip onboard which should Not have been there.

Posted on Jan 29, 2015

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: VP322-HDTV10A POWER PROBLEM

this tv is junk...

Posted on Mar 13, 2010

a1electronic
  • 30 Answers

SOURCE: Multiple attempts to Turn on the TV

It's common for capacitors on the power supply board to go bad (tops will swell up) and cause the same problem. these new LCD tv's are all very bad when it comes to power surges.

Posted on Jul 21, 2009

toolkits
  • 1099 Answers

SOURCE: LG 32" Plasma TV power-on problem

Hello,

Your power supply board is dead, u know basic electronics’ and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
hope this helps...

Posted on Jul 02, 2010

budmrtn
  • 11361 Answers

SOURCE: tv does not turn on after a thunderstorm and

Check the main fuse in the power supply, the TV also has small surge protection devices (MOVs) installed after the fuse, any surges the come along and big enough will cause the main AC fuse to blow. When you surge protector, EVERY connections must go through the surge protector, for example, the AC cord of the TV is connected to the surge protector, the cable connection did not go through the surge protection, the surge then can get to the TV through the cables.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Please post back what you find.

Posted on Jul 21, 2010

Testimonial: "Fantastic Results, very knowledgeable I can't thank you enough for your quick response!"

  • 144 Answers

SOURCE: I have an LG plasma tv that will not turn on.

I have had some problems with tvs taking a long time to start, turned out to be capacitors in the power supply. They leak, sometimes swell up. A kean eye may spot them. not a job for a vovice though.
pete

Posted on Nov 19, 2010

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1 Answer

Tv has 'Do Not Turn Off' with a scan up to 100%


Main system control memory IC fault. Do a reset to this set, and re-scan once again; before replace this IC.
To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

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1 Answer

Hi, Can any one please shed any light on my problem, When I switch the tv on it says DO NOT POWER OFF and under that SCAN it scans upto 100% then scans again upto 100% and again and again does not stop...


Try a hard reset by unplugging the tv while it is turned on. Then push and hold the power button for a few minutes to drain the electronics and memory of all. Then release button and replug back into outlet and then turn on to see if that has done the trick. If that does not work you can contact tech services for a hidden code to restore unit to factory defaults.

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Jmb tv troubleshootingMy jmb tv won't turn on. The stand by flashed a few times and the tv turned off and will not turn on. No response at all. I have changed the fuse but still nothing. Model no,...


Hi , silly question but I have a jmb tv 32 inch code Jt0132003B/01 but can't find the power button on the tv !?! I looked all over the tv but doesn't seem to have one ??? I don't want to leave it on stand by so my only option is to turn off at wall but that turns off My talk talk and DVD player too , any know where is it !?!

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JMB Television volume keeps switching off


If it works about 10 minutes and shuts down gradually, the fault must be with its audio output IC. Replace it.

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1 Answer

Always auto tunning everytime how can i solve this problem....


Could be losing settings if it is an older tv when unpluged other wise are you letting it finish the auto scan, if so then the tuner is failing.

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