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This is a quote from the service manual for a sharp 13N-M100B television, Chassis No. SN-010, but I have no idea if these instructions will work on any other Sharp model TV or not.

"To enter the service mode and exit the service mode.

"While pressing the Vol-up and Ch-up buttons at the same time, plug the ac cord into a wll socket.

"Now the TV is switched on and enters the service mode.

"To exit the service mode, check that customer adjustments are in the normal mode. Use the reset function in the video adjustment menu to ensure customer control are in their proper (reset) position.

Suggest you get a service manual before you start fooling around with the adjustments, unless you're absolutely sure you know what you're doing (that you're experienced with television circuits and with the hazards of the high voltage out of a HV Flyback transformer.

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13y ago

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