The screen picture bulges inwardly on the right and the left
The screen picture has just started bulging inwardly on the right and the left, pinching the picture in the center. The indented areas on both sides are black. The top and bottom of the screen remains the correct width, giving a bit of a hourglass effect. It sure maks TV watching frustrating.
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If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Take it to a repair shop.
The set will need to be diagnosed to be sure. There are a # of things that could cause this. I would start with looking at the power supply capacitors. Check for any with bulged tops. You can google bulged capacitors, to see pictures of what they look like.
Hi A common problem for these is bad capacitors in the power supply, Remove the back from your TV and look at the power supply on the left hand side.
You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed. This will cure the problem as they overheat being sat next to a heatsink that gets very hot! Try and change them for the same 3300uf but a higher voltage. Hope this helps
You probably have some bad electrolytic capacitors on the power supply module. The caps will be bulged or mushroomed at the top rather than flat if they need to be replaced. Parts are very inexpensive. I've fixed many of these sets by replacing bulged caps on the power supply for having same symptom of yours. That would be the first place I would start. A repair shop would probably get between $100-$150 to replace these parts if you wanted go that route.
Always unplug the TV before you start....:) On the Sanyo DP19648 has sound and NO picture.Take the TV apart locate the power supply board on left.Remove the plugs for the lights etc.take out the screws carefully unclip the power supply.Turn it over find the F1 tiny chip fuse locaed off center to the left with metal sheild away from you.I used a 2 amp (bc fuse unknown)I broke an agc style standard fuse and used the wire that was inside the fuse and also replaced the slightly bulged 220uf at 25volt cap which is located top side not far from burnt fuse.I suspect the fuse blew bc of the small orange bulged cap. From Ed the tech....good luck
That doubling from the bottom is indicating a defect in the Vertical Output section. It's most often an Electrolytic Capacitor that contains an electrolyte which is drying out because of a failed seal at the component.
Usually it's only one Capacitor that causes this defect. If you are capable of replacing a circuit board or can find that defective capacitor (sometimes they give them self away as a bulging envelope of the capacitor and replace it then you are needing a qualified technician to make a house call.
A magnetic source next to the monitor will mess with the signal but that usually will only affect the side closest to the magnet, not both sides of the image. If it worked fine the last time you turned it on and is messed up now then most likely a capacitor went bad inside and there is no easy fix. If you are not experienced in electronics then it would be dangerous to open it up. Monitors contain high voltage inside that can be stored in capacitors even when the monitor is unplugged.