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by aleksandr
Fri May 18, 2012 6:56 pm
Forum: Troubleshooting
Topic: I cant get a keyboard to work with my PI!
Replies: 42
Views: 39108

Re: I cant get a keyboard to work with my PI!

> IMHO the chip is defective, or its crystal has been damaged and doesn't run, > or its power supply is failing. something like that. I checked power and it looks alright. But crystal X1 was not oscillating. So it is either LAN chip or crystal itself. Because 25MHz in SMD package is not common thing...
by aleksandr
Tue May 15, 2012 9:12 pm
Forum: Troubleshooting
Topic: I cant get a keyboard to work with my PI!
Replies: 42
Views: 39108

Re: I cant get a keyboard to work with my PI!

Just an update to my personal problem of non-working keyboard. I was trying to watch carefully the messages printed by debian image during boot procedure and it looks like nothing in LAN 9512 chip is not detected. Neither USB hub, nor Ethernet device. At least boot procedure does not announce their ...
by aleksandr
Tue May 15, 2012 7:48 am
Forum: Troubleshooting
Topic: I cant get a keyboard to work with my PI!
Replies: 42
Views: 39108

Re: I cant get a keyboard to work with my PI!

Thanks all for suggestions. > However if your TP1-TP2 voltage is above 4.8 V at the moment when the trouble occurs, then the problem is probably something else- yet unknown. Voltage reaching USB sockets is 4.92V. Voltage generated by power supply is 5.07V. Should be enough IMHO. I checked schematics...
by aleksandr
Mon May 14, 2012 9:40 pm
Forum: Troubleshooting
Topic: I cant get a keyboard to work with my PI!
Replies: 42
Views: 39108

Re: I cant get a keyboard to work with my PI!

Hello all, I have a similar problem. RaspberryPi does not recognize my keyboard (PS/2 keyboard with PS/2 to USB adapter). Keyboard is rated 5V 50mA. Power adapter is rated at 5V 1A. And it holds voltage very well. But the strangiest thing is that it worked yesterday. Last night I wrote debian image ...

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