No beep and low boost voltage

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thebmags
 
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Joined: Fri May 24, 2013 5:03 pm

No beep and low boost voltage

Post by thebmags »

Hey, I was constructing the clock and it passed all the tests(boost voltage, beep test) until i attached the display to the main board. I'm pretty sure i put the Maxim IC in upside down an most likely blew it howe ever the boost voltage was fine ans the clock still passed the beep test.

So I ordered another IC from maxim and waited for it to arrive. When I inserted the new chip however the clock didnt beep and the boost voltage was low( it hovered around 8 volts). I haven't touched or altered the clock in any other way from when it originally "worked" and was curious to if there was anybody else who had this problem.

Thanks,
-Brian
PS here are links to pictures of the board
http://imgur.com/tMY2KQF
http://imgur.com/Qwk3DU2
http://imgur.com/Dt90gpl
http://imgur.com/Dt90gpl
http://imgur.com/TKE43by
http://imgur.com/isTBvjT
http://imgur.com/Zu6JpjQ
http://imgur.com/TiKGzaN

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adafruit_support_bill
 
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Joined: Sat Feb 07, 2009 10:11 am

Re: No beep and low boost voltage

Post by adafruit_support_bill »

What is the boost voltage before you install the Maxim chip?
After you install the chip, what is the output of the voltage regulator?
Does the regulator heat up when the chip is installed?

thebmags
 
Posts: 2
Joined: Fri May 24, 2013 5:03 pm

Re: No beep and low boost voltage

Post by thebmags »

Hey sorry about the massive response time

1.) around 8.5 volts (which is weird because it use be the in the right voltage range before I went off to school)
2.) 5 volts
3.) Doesn't heat up anything out of the ordinary

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adafruit_support_bill
 
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Joined: Sat Feb 07, 2009 10:11 am

Re: No beep and low boost voltage

Post by adafruit_support_bill »

No beep means that the processor is not running, so the boost circuit is not running and the output is the same as the input.
Make sure that your processor is firmly seated in the socket. Some better photos of the solder-side would be helpful. It is tough to photograph circuit boards without glare. Try near a window or even outside during the day.

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