Bad contrast and there is a high-pitched intermittent whine
My son says the front needs to be removed and the mirror and bulbs/tubes need to be dusted. I won't let him do it unless I know it might work. A bad picture is better than no picture--I can't afford to replace it
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Re: Bad contrast and there is a high-pitched intermittent...
There are no tubes on a rear projection. 3 lights red blue green. One may be out, or in need of all 3. The entire projector can be accessed thru a few screws at the rear of the TV onve it is removed, bulbs can be cleaned, and you can access the cabint for cleaning.
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Ensure the acoustic tubes are not obstructed. Detach them from the hard plastic flesh coloured part and clean them in warm soapy water, rinse and dry/allow to dry. Reassemble.
There is a possibility that this might be caused by the gain of internal amplifier being set too high, though this usually results in a constant or intermittent high pitched whine. Try adjusting the recessed wheel on the unit.
If neither of these measures cures the fault, you will need to take it to a technician, return to the supplier/manufacturer, or/and replace the unit
remove the lamp and with a light and or mirror look where the front of the lamp faces--there is a color wheel there--if it is shattered or damaged the set will not come on--most of these sets have a high pitched whine or grinding noise if this happens---the wheel is available on the internet and a moderate job to replace--I have seen lots of them bad---if you want an idea of what it looks firstname.lastname@example.org Steve
1) Make sure valve is open all the way 2) some machines have a screen inside of the hose hook up which could be clogged. 3) last check to see if it is the hot or cold by switch your selector switch on your machine to hot then cold. If one of these positions eliminate the noise then the valve in the machine is bad.
Sounds like a tube TV . If so I believe the tube is cracked not hard to do during moving Ive done it before. it can be replaced for around 125$ to 200$ look at how much your TV is worth and if it does not exceed the value of you unit . Then locate a repair shop in the yellow pages.
Ok maybe this may help .... there is a coil LL08 I believe... somtimes it creates a high pitch whine like you describe.. its stands up on the deflection board..it basicaly a large coil of copper wire....you can take silcon and put on the coil...in effect damping the ocillations...hope that might help