Sharp 27L-S100 TV - no tuner video/sound - direct input OK

Probably due to a power surge/spike the EEPROM's data became corrupted
so enter service menu (Electronic Servicing & Tehnology Magazine
Issue:June 98,page 26) and change parameter in EEPROM from 30 (or what
ever it is) to about 26 then shut tv off,voila audio restored.
I resetted the original EEPROM back to factory default values while
still in chassis.

Entering Service mode in Sharp tv's:

press volume up and channel up buttons at once then plug the set into
the ac outlet.The tv comes on and enters the service mode.To exit this
mode,depress the power button.
Once in the service mode,press the channel up/down buttons on the
remote control or the set to select the register you wish to adjust
the data.

Resetting Sharp tv's EEPROM values to factory values:

While in service mode press the channel up & down buttons for more
than 2 seconds

For future reference:

IC3001=Sony # CXA2074Q=US MPLX decoder sound IC=Sharp # VHICXA2074Q-1S
(surface mounted 48 pin QPP)
IC2101=EEPROM=Sharp # VHI24C01B/-1
IC2101=EEPROM=Sharp # RH-IX2447CEN1
IC2101=EEPROM=Sharp # 409-321-0902
IC2101=EEPROM=Panasonic # 24C01AIP

Note:the above sub #'s have been taken from:

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34 sites containing tv & vcr service mode access:

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mapage.noos.fr/tophe/tvser.html?KeohiHDTV
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Can you inject IF at the tuner output?

Alsocheck for B+ to the tunerno print here to verify but there is a
Sams Efact available if someone has it to forward to you.

--

Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)


"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd

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