Sanyo DP42746 42 in. Plasma Television "chopper power" Questions

power chopper STR-f6456 was O/C destroyed by S/C zener diode D910 in the power supply. I think it is a HZS5B1 4.6 to 4.8v zener but I need to confirm. I've replaced the very expensive chopper but need

...power has failed in the TV. This is a SMPS unit and so you can start by checking from the fuse, if blown then the chopper driver can be short. Please check the link below for tips on SMPS service. ...

...power supply board, the problem can be: check the fuse check the capacitor if puffed you have to replace check the main mosfet chopper if shorted you need to replace it; if you are not a trained ...

...whole time. It a common issue mainly with the R71 models. Faulty power supply, can be caused by some blown caps on the chopper supplying the mains board voltage rail. what is your tv? please rate ...

...to the filter capacitors.if resistor is fine and no volage after the chopper,then test the power transistor.u may also remove this transistor and then check if the voltavge will cross the ...

...(unlikely) 3. Power supply problem/chopper transistor 4. (and hope it's this because all you need is a soldering iron, good lighting and soldering skill) Dry joints or cracks around line output ...

chopper transformer tv my crt lg tv when pressed power button so turn on standby led for second then turn off and heared tictic however tv not on What is the exact model number to your LG TV? Provide ...

...power supplies on this sort of equipment is a safety item. All components that are replaced, and the manufacturers do not supply the components only a complete board, are critical for safety. If the ...

...because white screen requires most power and your chopper works at its max. The sound comes from inductance coils and transformer because of old isolation and glue which shouldnt make any

...power to and on the "other side" of the Bridge Rectifiers/Diodes. if not, replace that. if yes, proceed. Check for the correct Voltages around the Controller Chip. and Check the output of the Chopper ...