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Old 22nd October 2005, 09:06 AM   #1
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Join Date: Feb 2004
Location: utrecht
Default Help needed for JVC FX1100BK tuner

I have a faulty FX1100BK. After years and years of good service it
drops out after a few minutes of playing. I did find a part of the
schematics on the yaho tuner site.

If I do DC measurements out of the "regurator" board (not on the
schematic) into the powersuply part of the main board (on the
schematics)Iget DC readings way above the indicate ones. Some parts do
run very hot.

Does someone has the full schematic of the "regurator" board
available, or even better the complete service manual?

Any other help or suggestions would be welcome.


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Old 20th November 2005, 05:16 PM   #2
lectec is offline lectec  United States
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Join Date: May 2004
Location: san antonio texas
my first suggestion would be to go in and do some soldering at the regulators and the output section. loose components will drive one crazy.
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Old 20th November 2005, 06:16 PM   #3
tvi is offline tvi  Australia
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Location: Moonee Ponds, Vic, Australia
The Schematic is available at:
Tuner Information Centre

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Old 20th November 2005, 09:06 PM   #4
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Location: utrecht
Thanks for the directions of the schematic. Problem is that the one you will find there is not complete. The people from the JVC service centre were so kind to send me the complete set as PDF.

Still having problems though. Replaced some parts that seemed faulty (leaking caps). No succes.

The schematic is hardly legible. Have put the thing aside for a while now. I asume there is (are) zener(s) faulty, cannot read the right values.

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