Im trying to repair a sharp 32" tv - model # 32U-F510 . Anyone have a schematic for this ? Or some advice ? The picture is sunken in at the sides . This happened one day when the owner turned it on. Here is a picture of it :
there can be various reasons for this. a shrunken raster can indicate power supply problems but you have e-w bowing so check the horizontal scan areas. change electrolytic capacitors first.
Considering your question, you should be taking the set in to a service shop to have proper safe and reliable service for your set.
You have to have a good solid knowledge of TV electronics theory, and service experience to service your set. You will have to get the service manual, and follow through with a scope and DVM. That is how you will be able to find the defective parts! It is very difficult just from a picture to know exactly what parts are the cause. There are many parts in the horizontal scan circuits that can cause this type of fault.
There is a possibility that the fault is in an area that is referred to as the pin-amp circuit. It works with both the horizontal and vertical deflection amplifiers.
Jana is correct, you will need an oscilloscope and full service information and a knowledge of how the various parts of the deflection circuits work unless you are VERY lucky in shotgunning repairs.
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.