[TechAssist] FIX: JVC 31" TV: AV31BP6 plug in, one click,dead. low +9V reg output IC982]
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: "techassist >> \"techassist@xxxxxxxxxxxxx\"" <techassist@xxxxxxxxxxxxx>
- Date: Tue, 05 Oct 2004 19:13:29 -0400
Replaced the 9V three leg regulator IC982, the two opto-iso IC's:
PC901,902 (P621), the three digital transistors,Q921,922,924 all
DTC114ys/nte2355, several lytics in the 9V circuit, all good.
Unit now powers up perfectly.
I feel the three transistors were the culprits.
Phil Bader
-------- Original Message --------
Subject: JVC 31" TV: AV31BP6 plug in, one click,dead. low +9V reg
output IC982
Date: Fri, 01 Oct 2004 17:21:34 -0400
From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
To: techassist >> "techassist@xxxxxxxxxxxxx" <techassist@xxxxxxxxxxxxx>
No outward signs of any open or shorted parts. Has 5V stby at I/R det,
other stby volts there.
I noticed the three leg 9V. regulator (like a 7809) IC982 has a low
input, and low output at about 8.5 VDC out.
With my external bench power supply I clipped it across the output of
IC982 and pumped 9 volts there. The set came to life.
I cannot seem to back trace the input source path to this IC. Need
partial schemo of the IC982 input, or a verbal description, please. Need
the voltage source of this IC.
Thanks,
Phil Bader
--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
--
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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