Either we have a new pope - or my buck converter is faulty?
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- Posts: 19
- Joined: Mon Jul 25, 2011 11:23 am
Either we have a new pope - or my buck converter is faulty?
White smoke....
I've just completed the hardware build and started testing voltages.
The lowest voltage I can get form the buck DC-DC converter is 4.07v and there is 16v on the input.
I cannot physically turn the pot lower its at the end of its travel.
I expected 4.07v to be ok and put a jumper on J2
Very shortly there was smoke coming from the zener diode and I checked the voltage - 6.1v not good!
I assume this is a buck converter problem? or anything else it could be? Input voltage?
If so, where is the best place to get a reliable DC-Dc converter. This one was £1.96 from ebay
Will anything else be dead now?
Many thanks for any advice
Keith
I've just completed the hardware build and started testing voltages.
The lowest voltage I can get form the buck DC-DC converter is 4.07v and there is 16v on the input.
I cannot physically turn the pot lower its at the end of its travel.
I expected 4.07v to be ok and put a jumper on J2
Very shortly there was smoke coming from the zener diode and I checked the voltage - 6.1v not good!
I assume this is a buck converter problem? or anything else it could be? Input voltage?
If so, where is the best place to get a reliable DC-Dc converter. This one was £1.96 from ebay
Will anything else be dead now?
Many thanks for any advice
Keith
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- Posts: 19
- Joined: Mon Jul 25, 2011 11:23 am
Re: Either we have a new pope - or my buck converter is faulty?
I think zener is dead too - just tested 4ohms in each direction.
Hopefully it shorted all the voltage out so the regulators are ok.
Hopefully it shorted all the voltage out so the regulators are ok.
Re: Either we have a new pope - or my buck converter is faulty?
There seems to be a few posts of issues with these DC-DC boards, I need to buy one for my kit but I cannot find a known good seller for this particular board or a known good version.
It might be worth putting the info on here where yours was obtained.
Good luck with the build and hope it's just the zener!
It might be worth putting the info on here where yours was obtained.
Good luck with the build and hope it's just the zener!
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- Posts: 19
- Joined: Mon Jul 25, 2011 11:23 am
Re: Either we have a new pope - or my buck converter is faulty?
I got the first one that blew from ebay seller alltopnotch
Second one will be from ebay seller booskibits (although i think someone already had a failure from them)
I'll report back when it arrives.
It was just the zener that blew fortunately.
Second one will be from ebay seller booskibits (although i think someone already had a failure from them)
I'll report back when it arrives.
It was just the zener that blew fortunately.
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- Posts: 19
- Joined: Mon Jul 25, 2011 11:23 am
Re: Either we have a new pope - or my buck converter is faulty?
Well there's a thing!
The one I got today from booskibits worked but alltopnotch failed!
Whereas its the opposite for G8DPH
Looks like its a matter of luck then!
The one I got today from booskibits worked but alltopnotch failed!
Whereas its the opposite for G8DPH
Looks like its a matter of luck then!