Green LED does not flash

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rbc12363
 
Posts: 3
Joined: Sun Dec 12, 2010 1:11 pm

Green LED does not flash

Post by rbc12363 »

Hello,

I purchased a TV-B-Gone Kit to assemble with my son Ross. We made it to the micro test step, but the LED does not flash. Here is what we have done to date:

• Used good ESD practices.
• Inspected for open traces, good solder joints, and there are no shorts under high magnification.
• Tested the LED (works fine, normal voltage drop)
• Checked to assure power is at the micro with new alkaline batteries.

I’m not sure what else to do. Is there a chance that the micro is un-programmed? Is there any state of the micro that would yield an un-flashing LED?

I'll try a few things listed in the forum here too.

Thanks in advanced for any help you can provide.

rbc12363
 
Posts: 3
Joined: Sun Dec 12, 2010 1:11 pm

Re: Green LED does not flash

Post by rbc12363 »

Update:

- Removed battery.
- Removed micro.
- Used Fluke meter in mA current mode to short pins 4&7. LED lights!

Obvioulsy a micro issue?

Comments welcome.

Bob

adafruit
 
Posts: 12151
Joined: Thu Apr 06, 2006 4:21 pm

Re: Green LED does not flash

Post by adafruit »

rbc12363 wrote:Update:

- Removed battery.
- Removed micro.
- Used Fluke meter in mA current mode to short pins 4&7. LED lights!

Obvioulsy a micro issue?

Comments welcome.

Bob
hi bob,

thanks for posting this up - that's correct, it does look like a micro issue, we'll send a new one out to you and follow up via email.

cheers,
adafruit

rbc12363
 
Posts: 3
Joined: Sun Dec 12, 2010 1:11 pm

Re: Green LED does not flash

Post by rbc12363 »

Got new micro, works perfectly!

Thanks for the help and prompt replies...

Bob

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