[TechAssist] JVC AV27790 storm,no OSD, panel control,hard to power off, FIX
- From: Philip Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: "techassist@xxxxxxxxxxxxx" <techassist@xxxxxxxxxxxxx>
- Date: Wed, 03 Sep 2003 12:04:20 -0400
Plug it in, may power on itself. Took many tries to power off manually.
No volume control adjustment, no OSD. The one channel it was stuck on
was OK.
Tried replacing eeprom with micro, same.
Fix: IC781 5V reg.
Found a small three leg IC regulator, IC781 (KIA78S05) 5V reg with about
+13V in, zero out.
Replaced it with a stock 5V reg IC.Unit operates good now.
There are holes at IC781 that would allow insertion of a standard LM7805
TO-220 type, but the smaller was in this set.
--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
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