Bossarea Forum
Bossarea Forum
Home | Profile | Register | Serial Database | Active Topics | Members | Search | FAQ
Username:
 Password:
Save Password
Forgot your Password?

 All Forums
 Boss Products
 Modifications and Technical Issues
 DOD American Metal dim LED		  New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

Vim Fuego
Gold Member

Denmark
566 Posts
Posted - 10/13/2009 :  23:00:23  Show Profile  Reply with Quote
Hi all - new problem:

I have a DOD FX-56 with a very dim LED.

I measure 7.3V on it when engaged and the LED is very DIM - almost impossible to see..

Is this current to much or is the LED just gone bad??

Any input greatly appreciated.

Cheers

zerksies
Double Platinum Member

USA
3406 Posts
Posted - 10/13/2009 :  23:12:49  Show Profile  Send zerksies an AOL message  Click to see zerksies's MSN Messenger address  Send zerksies a Yahoo! Message  Reply with Quote
whats the voltage of the battery putting out
Go to Top of Page

hot tubes
Silver Member

Canada
162 Posts
Posted - 10/14/2009 :  05:55:41  Show Profile  Reply with Quote
7.3 volts into your LED , sounds high to me .
Go to Top of Page

Laurie
Double Platinum Member

Canada
4854 Posts
Posted - 10/14/2009 :  06:04:31  Show Profile  Visit Laurie's Homepage  Reply with Quote
quote:
Originally posted by Vim Fuego
I measure 7.3V on it when engaged
If you mean that you are measuring the voltage across the LED when the LED is "on" and it is 7.3V, the LED is toast. Should be down around the 2-3 volt range.
Go to Top of Page

Dr. Bob
Moderator

Australia
6593 Posts
Posted - 10/14/2009 :  07:17:26  Show Profile  Visit Dr. Bob's Homepage  Reply with Quote
Hi Vim Fuego

The guys are right; With that high a reading.
Sounds like the LED has gone very High resistance.
or most likely went open circuit.

Replace it with a cheap 5mm test LED & re-measure the voltage across it.

Regards Dr. Bob
Go to Top of Page

Vim Fuego
Gold Member

Denmark
566 Posts
Posted - 10/17/2009 :  23:04:46  Show Profile  Reply with Quote
Thanx for the input guys.. it was a defect LED..

Cheers
Go to Top of Page

Dr. Bob
Moderator

Australia
6593 Posts
Posted - 10/18/2009 :  02:47:45  Show Profile  Visit Dr. Bob's Homepage  Reply with Quote
quote:
Originally posted by Vim Fuego

Thanx for the input guys.. it was a defect LED..

Cheers

Hi Vim Fuego

Excellent!
Great that you were able to fix it...
What does is sound like?

In case you needed a schematic? You can find it here:
http://www.freeinfosociety.com/electronics/schemview.php?id=2294

--- edit ---
Vim - while you are still in fix it mode.
Check the 10K current limiting resistor in series with the LED.
It may have possibly changed value over the years?
10K = ( brown, black, orange - [gold for 5%] )

Regards Dr. Bob
Edited by - Dr. Bob on 10/18/2009 02:51:28
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
Bossarea Forum © 2005-2007 BossArea Go To Top Of Page
Powered By: Snitz Forums 2000 Version 3.4.06