LEDs are abnormal colour and do not go out completely

Alexander_d
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1 year 7 months ago - 1 year 7 months ago #10229 by Alexander_d

LEDs are abnormal colour and do not go out completely was created by Alexander_d

Hi everyone,
I have faced the following problem: LEDs that turn the test cycle (R-G-B-off) work rather strange:
- firstly - they have abnormal colours (red is more to purple)
- secondly, they do not cut off. Instead of complete off all three crystals work 50%, that give some blue light.

Yes, I have examined the manual and cleaned the flux aroud FETs Q3-Q5 It did not help.

Where's the bug?

Thanks!

Last edit: 1 year 7 months ago by Ian.

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Ty_Eeberfest
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1 year 7 months ago #10230 by Ty_Eeberfest

Replied by Ty_Eeberfest on topic LEDs are abnormal colour and do not go out completely

Some things to consider...

Do you have the right code loaded in the UNO? It should be this version: bitbucket.org/isparkes/nixiefirmwarev1/s...rdunixFade9_6_digit/

Are the FETs installed in the correct orientation?

Are the LEDs installed in the right orientation?

Look into it later when the dust is clearing off the crater.

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Torsten Lang
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1 year 7 months ago #10231 by Torsten Lang

Replied by Torsten Lang on topic LEDs are abnormal colour and do not go out completely

Alexander_d wrote: Yes, I have examined the manual and cleaned the flux aroud FETs Q3-Q5 It did not help.

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Where's the bug?

Ty, Ian,
are there currently any problems with the forum as I get an access error (see above)? I'm signed in.

Regards,
Torsten

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Ian
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1 year 7 months ago #10232 by Ian

Replied by Ian on topic LEDs are abnormal colour and do not go out completely

Thanks Ty. In addition to that: the blue LED is really sensitive and even a smallest current can cause it to glow. I suppose that the 2N7000 is defective.

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Ian
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1 year 7 months ago #10233 by Ian

Replied by Ian on topic LEDs are abnormal colour and do not go out completely

Torsten Lang wrote:
Alexander_d wrote: Yes, I have examined the manual and cleaned the flux aroud FETs Q3-Q5 It did not help.

You do not have permissions to access this page.

Where's the bug?
Ty, Ian,
are there currently any problems with the forum as I get an access error (see above)? I'm signed in.

Regards,
Torsten

Hi Torsten: you're not seeing the picture. You have author rights, I'll set you back to normal user for a moment to see if the problem is there.

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Ty_Eeberfest
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1 year 7 months ago #10234 by Ty_Eeberfest

Replied by Ty_Eeberfest on topic LEDs are abnormal colour and do not go out completely

Ian wrote:
Torsten Lang wrote:
Alexander_d wrote: Yes, I have examined the manual and cleaned the flux aroud FETs Q3-Q5 It did not help.

You do not have permissions to access this page.

Where's the bug?
Ty, Ian,
are there currently any problems with the forum as I get an access error (see above)? I'm signed in.

Regards,
Torsten

Hi Torsten: you're not seeing the picture. You have author rights, I'll set you back to normal user for a moment to see if the problem is there.

Ian it seems to be specific to the image in this thread. If I log out I get the same message Torsten is reporting, but uploaded / attached images in other threads appear normally.

Look into it later when the dust is clearing off the crater.

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LEDs are abnormal colour and do not go out completely

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