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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Sharp TV schematic + help
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 : http://img.photobucket.com/albums/v225/solrizzo/TV.jpg contact me at |
#2
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Sharp TV schematic + help
On Feb 17, 11:29 pm, wrote:
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 : http://img.photobucket.com/albums/v225/solrizzo/TV.jpg contact me at 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. -b |
#3
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Sharp TV schematic + help
On Feb 17, 5:39 pm, b wrote:
On Feb 17, 11:29 pm, wrote: 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 : http://img.photobucket.com/albums/v225/solrizzo/TV.jpg contact me at 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. -b How Do i check the "horizontal scan areas" ? change which caps? in the power supply ? |
#4
Posted to sci.electronics.repair
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Sharp TV schematic + help
On Feb 17, 5:39 pm, b wrote:
On Feb 17, 11:29 pm, wrote: 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 : http://img.photobucket.com/albums/v225/solrizzo/TV.jpg contact me at 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. -b how do i check the horizontal scan areas ? which electrolytics shopuld i check/change ? |
#5
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Sharp TV schematic + help
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 _____ "493dart" wrote in message ... On Feb 17, 5:39 pm, b wrote: On Feb 17, 11:29 pm, wrote: 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 : http://img.photobucket.com/albums/v225/solrizzo/TV.jpg contact me at 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. -b how do i check the horizontal scan areas ? which electrolytics shopuld i check/change ? |
#6
Posted to sci.electronics.repair
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Sharp TV schematic + help
On Feb 17, 11:59*pm, "JANA" wrote:
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 _____ "493dart" wrote in message ... On Feb 17, 5:39 pm, b wrote: On Feb 17, 11:29 pm, wrote: 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 : http://img.photobucket.com/albums/v225/solrizzo/TV.jpg contact me at * 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. -b how do i check the horizontal scan areas ? which electrolytics shopuld i check/change ?- Hide quoted text - - Show quoted text - 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. |
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