No Beep, Display Off.

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marioe1
 
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No Beep, Display Off.

Post by marioe1 »

Passed first two tests, after installing C5, MAX chip, R3 and Q3 there is no longer a beep and tube does not light up. Q3 is in "reverse" (text on curved side).

Voltage for booster conv. still @ around 60v w/ chip in place. PLEASE HELP

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Re: No Beep, Display Off.

Post by adafruit_support_bill »

I assume you are talking about an Ice Tube. Post photos of the front & back of the board and we'll check it over.

marioe1
 
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Re: No Beep, Display Off.

Post by marioe1 »

Here are the pictures of front, back and tube PCB from back
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adafruit_support_bill
 
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Re: No Beep, Display Off.

Post by adafruit_support_bill »

Very clean build. Nice soldering job! The color bands on R1 & R2 look a little strange - I suspect it is just the lighting in the photo, but double check against the parts list anyhow.
Voltage for booster conv. still @ around 60v w/ chip in place.
That is unusual. Typically 'no beep' means that the microprocessor is not running. But if the microprocessor is not running, there should be no boost either. :?
Also, the boost voltage typically drops a bit when the chip is installed.

Remove the tube board and (carefully!) remove the VFD chip and re-check all your voltages - and see if the beep comes back.

marioe1
 
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Re: No Beep, Display Off.

Post by marioe1 »

What is the best way of removing the VFD chip? it's really in there and I don't want to break it.

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adafruit_support_bill
 
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Re: No Beep, Display Off.

Post by adafruit_support_bill »

There are two slots in the socket on opposite corners. With a small hook in the end of a paperclip wire, you should be able to get underneath and gently lift it out. Work it from both sides so it comes out as straight as possible.

marioe1
 
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Re: No Beep, Display Off.

Post by marioe1 »

I removed VFD chip and ran test again

1st test positive on first pin of 7805. I read 95V
positive on third pin of 7805. ALMOST NO READING AT ALL

No Beep

Boost converter voltage at 67V


Is there anything else I should be checking?

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Re: No Beep, Display Off.

Post by adafruit_support_bill »

1st test positive on first pin of 7805. I read 95V
:!: 95v :shock: Are you sure that isn't 9.5v?
positive on third pin of 7805. ALMOST NO READING AT ALL
Not a good sign at all!
No Beep

Boost converter voltage at 67V
Hmmm. That makes me think that the 95v might be true.

:!: Very carefully (these are high voltages here) :!: re-confirm that first voltage reading. If your adapter wen't bad, it may have taken out the rest of the board.

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Re: No Beep, Display Off.

Post by marioe1 »

Double checked, the voltage is still at 95V

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Re: No Beep, Display Off.

Post by adafruit_support_bill »

OK then. Unplug the adapter. Cut the cord off and and toss the adapter in the trash. I'm going to assume that the rest of the board is fried.

Contact [email protected] and we can send you a new Ice Tube kit.

marioe1
 
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Re: No Beep, Display Off.

Post by marioe1 »

will do. Thank you for your help

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Re: No Beep, Display Off.

Post by marioe1 »

SUCCESS!

Thanks for everything
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