I just finished my tv b gone kit .
But one of the LEDs are not working?!
Whats wrong?
Edit : the white foam on the backside is from the sticky paper that comes with the kit.
LED not working?
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Please be positive and constructive with your questions and comments.
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LED not working?
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- Front
- 1365940988275.jpg (405.06 KiB) Viewed 2063 times
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- Backside
- 1365940933185.jpg (369.79 KiB) Viewed 2063 times
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- One of the LEDs is not working..
- 1365940869776.jpg (266.83 KiB) Viewed 2063 times
- adafruit_support_bill
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Re: LED not working?
Looks like possibly some cold-solder joints there. Re-work any that do not look smooth and shiny. http://learn.adafruit.com/adafruit-guid ... n-problems
Also double check your transistor placement. Q5 should have a different number than Q1-Q4.
Also double check your transistor placement. Q5 should have a different number than Q1-Q4.
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- Posts: 3
- Joined: Sun Apr 14, 2013 7:40 am
Re: LED not working?
thanks for the reply.adafruit_support_bill wrote:Also double check your transistor placement. Q5 should have a different number than Q1-Q4.
what do you mean?
- adafruit_support_bill
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Re: LED not working?
Q5 is a PNP transistor. Usually marked PN2907 or 2N3806.
Q1-Q4 are NPN transistors - usually marked PN2222.
A common error is to mix them up since they usually look identical except for the markings.
Q1-Q4 are NPN transistors - usually marked PN2222.
A common error is to mix them up since they usually look identical except for the markings.
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- Posts: 3
- Joined: Sun Apr 14, 2013 7:40 am
Re: LED not working?
i re-heated the joints.. but the same ;(
and Q5 is okay
and Q5 is okay
- adafruit_support_bill
- Posts: 88096
- Joined: Sat Feb 07, 2009 10:11 am
Re: LED not working?
It could be either the led or the transistor. We could flip a coin, but since the parts likely cost less than the postage we'll just send you replacements for both. I'd replace the LED first, since it is a little easier. If that doesn't work, you can do the transistor too.
Contact [email protected] with a link to this thread and ask for a narrow-beam IR led and a PN2222 transistor for the TV-B Gone
Contact [email protected] with a link to this thread and ask for a narrow-beam IR led and a PN2222 transistor for the TV-B Gone
Please be positive and constructive with your questions and comments.