JVC RX-401 part ID

[Bill Renfro]

I need to know the value of D815 and D816 in a JVC RX401 receiver.
I know they are zener diodes, but I do not know the voltage.

Thanks,
Bill
Christian Technology
[email protected]

 

[Pathogen]

ya could buy a drawing from Sams

 

[Mark D. Zacharias]

If they're associated with the lamp circuit I think they were 12 volt
zeners. Pretty much parallel the lamps, but when the lamps go the zeners go.

Mark Z.

 

[[email protected]]

I worked on some JVC video stuff a few years back and needed some IC
protectors. There was a number I called for a center tech support and a
manager there read the schematic on the piece I was working on and sent
me a bunch of those protectors!!
Unfortunately I lost that # . Maybe you can find it here or be lead to
it:
http://www.jvc.com/support/support.jsp?pageID=10

Richard

 

[Bill Renfro]

Thanks Mark,
I had trouble with the news server and while I was waiting for it to be
resolved, I tried different values. It was my personal unit not a
customers. You are correct they are in the lamp circuit. The display was
never very bright from day one. I started with 6 volt zeners, no display.
Moved to 8 volt, very dim. Next tried 10 volt zeners, normal brightness
(which was not great to start with). Then for fun I tried 12 volt zeners,
instead of a brighter display, which I expected, the display was dimmer than
with the 10 volt diodes.
Bill Renfro
Christian Technology
[email protected]