Convert Miniature Lamps to LED on Stereo Receiver

[canaanskier]

Hi Everyone,

Here's the situation. I have a 20 year old amplifier made by Yamaha that
has a number of buttons on the front that are lit by 14.5 V 80mA bulbs. The
bulbs are not available any longer and I haven't been able to find suitable
replacements. My question is this: Is it possible to substitute LEDs with
a minor modification of the the source current, ie., can I go to Radio Shack
and buy something that will enable the LED to work in this situation. I'm
not sure but I suspect that the current is AC. If you have any ideas I
would appreciate any guidance.

Thanks.

P.S.

If you want to reply directly please remove the x-y-z from my email address.

 

[vze1xj6z]

Hi Everyone,

Here's the situation. I have a 20 year old amplifier made by Yamaha that
has a number of buttons on the front that are lit by 14.5 V 80mA bulbs. The
bulbs are not available any longer and I haven't been able to find suitable
replacements. My question is this: Is it possible to substitute LEDs with
a minor modification of the the source current, ie., can I go to Radio Shack
and buy something that will enable the LED to work in this situation. I'm
not sure but I suspect that the current is AC. If you have any ideas I
would appreciate any guidance.

Thanks.

P.S.

If you want to reply directly please remove the x-y-z from my email address.

a 680 or 820 ohm resistor in series with the LED should do the trick,
whether ac or not. If it's ac the "diode" will "flicker" - "thirty"
times per second.

 

[Al]

Hi Everyone,

Here's the situation. I have a 20 year old amplifier made by Yamaha that
has a number of buttons on the front that are lit by 14.5 V 80mA bulbs. The
bulbs are not available any longer and I haven't been able to find suitable
replacements. My question is this: Is it possible to substitute LEDs with
a minor modification of the the source current, ie., can I go to Radio Shack
and buy something that will enable the LED to work in this situation. I'm
not sure but I suspect that the current is AC. If you have any ideas I
would appreciate any guidance.

Thanks.

P.S.

If you want to reply directly please remove the x-y-z from my email address.

Check out:
http://www.allelectronics.com/cgi-bin/category.cgi?category=320&type=stor
e

They have a number of lamps available.

Al

 

[Soeren]

If it's ac the "diode" will "flicker" - "thirty" times per second.

Nope, 60 times a second (assuming 60 Hz AC) or it's a very odd "diode"
(LED).


--
Regards,
Soeren

* If it puzzles you dear... Reverse engineer *
New forum: <URL:http://www.ElektronikTeknolog.dk/cgi-bin/SPEED/>