I'm guessing that this is a CRT based TV, not an LCD. That being said, the problem is a failure of the vertical circuit. Usually this is a small flat IC (LA7837 or similar). Try resoldering the pins if you can first. If that fails to resolve the problem, replace the IC. Please be aware that there are potentially dangerous high voltages present even when unplugged.
Most common cable will be the Composite Video cable (Yellow RCA jack/plug) and Red and White for the audio, or for better picture, you will use Component cables (Red, Green, and Blue RCA jacks/plugs for the Video) and the RED/WHITE jacks/plugs for audio.
Just match the color codes on the TV and the DVD player.
If the DVD has HDMI port, then use the HDMI cable.
So you need to look at the back of the DVD player to see what kind of jacks it has on the rear panel first.
This is an indication of out-of-regulation condition on the power supply board and caused by leaky/dried electrolytic capacitor on that board. It will dropped the normal working voltage and will disable the unit.
Leaky electrolytic capacitor has a physical indication of fault like bulged/dome at the top and can be easily identify through visual inspection. Let the unit unplug from the outlet for 1 hour to drain the voltages from the power supply, open the rear cover and check for leaky electrolytic capacitor on the power supply board(this is where the power cord's directly connected). See sample picture below of leaky electrolytic capacitor with dome at the top.
If you've found them on the board, replaced it with same capacitance and working voltage that is printed on its body itself. Watch the video below for more info regarding electrolytic capacitor.
Dried electrolytic capacitor has no physical indication of fault, you must have a capacitor checker to determine its condition and pinpoint the faulty one. If not available, you may replaced all capacitor in the output of the power supply board, it will not cost you much because this is one of the cheapest part on that board, cost only $4 at the most.
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.
Avr power supply is the problem, you need to replace the power supply, or replace the electrolytic caps on the power supply, and that will take care of your problem.
If the screen is blank with back light on but no picture, then the problem is usually the digital board. There is no other way to test the board than reading voltages and following the schematics. Voltages are detailed in the diagrams in service manual, available here : sharp_lc-26dv24u_[ET].
The digital board starts at page 11.
You can also test on power board the lines 12VDC, 5VDC and 6VDC that supply power to digital board.
For safety reasons testing and repair must be done by a trained person.
That sounds like a dead power supply. Smell it to see if it stinks like it overheated. There are 4 13v connector pins that can be spliced into from one standard spliced wall wart. Common is negative if you study the mobo by scratching off the paint. Both fuse tracks for instance are positive, there are two more positive pins.
Sharp Aquos LC-37G4U Try the remote.
On the remote is a button labeled CC near the bottom. Press the button to access a menu to switch off. Each time you press the button it will toggle among the choices.
If the tv has problems, try turning it off and unplugging for a few minutes to reset the EPROMs. Plug in and turn on. Repeat the above.
If you want to change the size/color of the font you can get into menu mode by pressing the menu botton in the center of remote.
Next use the and > arrows to get to OPTION menu.
Use the ^ and v arrows to get to the Caption Setup menu and press Enter.
THe problem is in the set top box. Or common called the tuner box. IT looses the 5 volts to the main display and thus the monitor will go into a shut down state. THESE boxes are factory repair only and must be sent off to repair.
