On occasion I will be unable to turn off my JVC Model AV-2659S. And then all of a sudden the same way it wouldn't turn off, it starts working properly. I have checked all the settings and can't figure out why it does that. Any ideas?
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Re: JVC TV won't turn off
It may be that the switch is worn out and needs to be replaced. Or your TV may have "Windex syndrome." This happens when people clean the screen by spraying on Windex and wiping it off like cleaning a window, and some of it runs down and gets on the circuit board front edge where the switches are. It can cause corrosion which leads to intermittent operation, strange behavior, or total failure of buttons. Best cure is to remove the board, inspect it, clean any corroded connections, replace the switches, and check the values of some of the small parts in that area. They can all be affected.
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usually after 4 or 5 yrs EHT ( transformer that supplies voltage to tube ) becomes weak - then TV won't get ON.. means no picture no sound ..but LED blinks - in some TVs along with EHT 1 or 2 components like resistor, transistors, etc will also gets deffective .................. so solution is TV circuit board has to be checked to find whether only EHT is deffective or other components are also deffective.......... price of EHT will be between Rs.250 (US$ 5) to Rs.600 ( US$ 12) ........iam from bangalore ( 09986222774, email@example.com ) .....i don't have any idea about EHT component's price & service charge in your area........this problem cannot be solved by user unless user is a technical person having idea about components (resistors, transistors,diodes,...etc..), having multimeter , soldering iron & other tools...so my suggestion call TV service engineer or contact jvc service centre.........
Wow that's interesting, was there anybody watching your home while you were gone? There is a possibility that someone simply turned down the color level with the color control? Check that first. It's an unusual symptom. With composite video, component video or HDMI it's not usually possible to experience that defect. Since the color (chrominance signal) is usually inseparable from the luminance (black and white signal) I would check the color setting first. Other wise your set has become unable to detect that color signal... I bet it's a setting rather than a defect.
I have a Quasar Model AM 51760221 WP 3915YW 13 inch TV made in 1985. I am using cable and none of the codes work published by Comcast work to make the TV work with my black box. They are unable to help at Comcast. I did get an updated remote from them, but still unable to turn off the TV to use the remote/black box.
have JVC AV-32F702 TV. It's picture color is very red. unable to adjust colors through menu. Channel numbers are also in red now instead of normal green. any suggestion?
please check red color cathode circuit
1 check red output from ic to red cathode ckt
2 check voltage on r output ckt& ic or tr.
3 check loose contact in red cathode ckt
4 check crt base for loose.
5 loose connector
6 chroma ic
From what you describe, a solder joint has probably cracked loose in a power supply or deflection circuit, which is quite common. Since you do sometimes see a good picture, all of your major components are fine. Repairing cracked solder joints is a very easy procedure and definately worth fixing on a 32 inch TV. The first 2 digits of the model number indicate the size of the TV.