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Main digital board fault. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
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Don't know if this can be regarded as a fix, but it may help deal with the issue- keep the lock set on, only unlocking it briefly enough to make keypresses, after which you immediately set it back on lock. If the problem your unit has is the same as with mine, you will see LOCKED pop up on the screen randomly even when you are not pressing any keys. So there is a mechanical problem with the keyboard, some kind of electrical interference being interpreted as a keypress, or buffered keypresses.
There are several faults that can cause this. Shorted diodes in the high voltage, a bad flyback transformer, a shorted CRT driver IC. None of them are very easy to fix.
It sounds like you have a power supply problem! You will probably find some bad caps (capacitors) on the board. They will look bulged on the top an may be a little leaky (brownish stain). As far as the noise problem this could be caused by harmonics, from the bad caps!
My MMP8567 screen read ''boot error shutting down''.
Update the firmware. Download directly from Memorex site, Support section.
Everytime I plugged it in to the computer the computer would find it but then it would disappear almost immediately.
I downloaded the Updater program from Memorex but it couldn't find the player.
The directions from Memorex said ''Hold down the play button and plug
in usb cable.'' Another set of Memorex directions said, ''Hold down
the power button and plug in usb cable.'' Neither worked for me.
SOLUTION: I finally held down the LOCK/UNLOCK button and plugged in
the usb cable. My computer found the player immediately and a software
driver window popped up asking for a driver. I let windows search the
internet and it found and installed the driver. The driver it was
looking for was: ''player recover device class driver''
After windows
confirmed it recognized my mp3 player I started up the Firmware update
program and was able to update the player.
I don't have a permanent fix, but I do have a work around:
The problem appears to be some sort of "loose connection" associated with either the power plug or how the back of the TV is mounted to the front. Try the power plug first: we unplugged/plugged the plug from the back of the TV (i.e. not the wall) multiple times, jiggling it around a bit each time we plugged it in, and did so until we didn't hear the "pop/click" (i.e. the sound we've come to associate with the problem)... Voila! It started working again.
If that doesn't work, try removing all the screws from the entire back panel, moving the back panel up/off a bit (but completely removing, and being careful not to disturb any of the connections to the DVD player, etc.), and then do the unplug/plug thing. We're guessing that moving the back panel around is essentially facilitating the unplug/plug thing.
Our repairman discovered this when he tried to fix it the first time. He removed the back panel but then the TV immediately started working, so he couldn't determine what the actual problem was. He gave it back to us, and it worked for a few months and then the problem came back. We did the panel/unplug/plug thing and it started working again.
windows 2000 should recognize the flash drive immediately after it is inserted. The flash drive should install itself. Besides, there are only drivers available on the Memorex website for Windows 98se.
I see I'm not the only one with the same problem. There is another post with a date in December 2006, and mine started having the same problem in late December. Similar issue: It won't turn on using the remote or power button. If I unplug it from power and then plug it back in, it comes on, showing one channel (ch 6). It won't respond to any control on the TV itself, and if I press any button on the remote it immediately turns off. If I then press any button on the remote, it sounds like it will turn on, and the power light goes green, but after about 2 seconds, it powers down, without getting any picture. I suppose I can just leave it on channel 6, without making any other changes. I submitted a request for assistance on the Memorex website, but I'm not expecting anything from them. It's out of warranty.
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