Question about Hitachi L32H01 32 in. HD-Ready LCD TV

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When I switch from one channel to another my sound goes off completely, the only way I can rectify is to switch tv off from the mains and then swiTch it back on again

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  • Hitachi Master
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Corrupted firmware. A firmware update is necessary. Contact the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.

Posted on Apr 29, 2015

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Posted on Jan 02, 2017

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Hi. Switch off (mains switch) the VCR. Then see if you can change channels with your TV remote. Blue screen mostly means that no channel has been programmed. If there is , you should at least have the sound. So, if you have sound, there is an internal problem in the TV. If no sound appears, try to get into setup mode (button Menu)
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Tv picture and sound are fine for about 10 seconds after switching on then picture freezes with no sound. Unable to change channels so switch off and on again. Problem repeats itself.

Sounds like the main board. You can buy replacements on eBay, but I'd hit youtube up and see first if for sure this is what the issue is. Depending on your TV, that main board could cost upwards of 40 bucks. I've yet to encounter a main board that was hard to replace, so don't be intimidated. Once you pull all the plugs out of it and put the new one in, the cables can only reach where they're supposed to go most of the time. The other times, they're taped in place, so it won't be hard to see what goes where.

However, I would like to point out, if you see lines, that's another issue. The no sound tells me it's the main board (where all your stuff plugs in except the power cable), but if you see lines then you may also have a Y-sustain board out. I don't know what kind of tv you have, so I don't know if it even has a Y-sustain.. But if your tv has been hit my a massive power surge, it's possible to have multiple parts out.

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The power supply regulator section should be troubleshooted. The "Pop" sound you heard might be of a bursted electrolytic capacitor in the AC mains rectifier section inside the TV. All the related commponets, rectifier diodes, protection zener diodes etc:- should be checked before switch ON the TV further.

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Pl. check main fuse of your house any loose contact may fail your mains power supply,as there is heavy current drawn as you switch on TV set for few seconds.If the mains fuse is o.k than there may be direct shorting inside the TV set,call expert technician to rectify the same.

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It sure does sound confused.

Try a factory/default reset on the tuner, then unplug the TV from the power, leaving it for about 10 mins, plug it back in, then re-scan the channels.

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Doesn't sound like your TV... that sounds like your set-top box cutting in and out.

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Check the cables that run from the main board to the switches and the manual buttons on the set, sounds like a cable needs to be reseated, or could be pinched or crimped

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