PRS-300 Dead PRS-300

BoiledMouse · 03-26-2011, 09:00 AM

Hello, I hope someone can suggest a solution to my problem.

The problem is this:

My PRS-300 won't turn on at all, and will not register as a device when plugged in by USB.

I have tried charging overnight from a (not sleeping) PC and from a mains charger that I bought to try and solve the problem. With either method a red light comes on for a couple of minutes and then goes off.

I was going to try a new battery but having taken the device apart and tested the battery with a multimeter it reads at 4.15V (the battery is a 4.2V not a 3.7 as listed in the service manual

So it looks to me that the battery is actually fully charged. I am out of ideas, does anyone have a suggestion?

(it is out of warranty)

Thanks in advance!

drdann · 03-26-2011, 01:42 PM

https://wiki.mobileread.com/wiki/Sony...shooting_Guide

BoiledMouse · 03-26-2011, 03:30 PM

hmm, that page has been deleted, did you mean https://wiki.mobileread.com/wiki/Sony...nd_Reset_Guide?

Sadly I can't try any of the things on that page (soft/hard reset etc) as it won't turn on at all :|

igorsk · 03-27-2011, 01:48 PM

If you press the reset and then toggle the power switch, does anything at all happen?

drdann · 03-28-2011, 12:43 AM

I didn't realize it was gone... my suggestion is the old paper-clip in the reset hole and then toggle the slide switch,

doreenjoy · 03-28-2011, 05:57 PM

Can you give it a good long charge via a mains charger? Sometimes the battery is too depleted to charge via USB, and the battery meter may not be accurate.

BoiledMouse · 04-03-2011, 09:24 AM

Thanks very much for all your suggestions everyone, sadly after further testing of the battery and trying all your ideas I had to pronounce the PRS-300 dead yesterday.

On the bright side I bought a PRS-350 today and it is awesome

doreenjoy · 04-03-2011, 02:21 PM

Glad you found a good solution to the problem. I hope you love your 350.

BoiledMouse · 04-03-2011, 09:53 PM

Thanks, so far I do love it, I loved my 300 so I can't imagine any problem with the 350. I do feel sad about the 300, but it is in my box of bits and components for further experimentation and projects so hopefully it will be used for something useful sometime...........

Edit: also wanted to say that it is refreshing how helpful and nice everyone is on this forum.

03-26-2011, 09:00 AM	#1
BoiledMouse Junior Member Posts: 4 Karma: 10 Join Date: Mar 2011 Device: PRS-350	Dead PRS-300 Hello, I hope someone can suggest a solution to my problem. The problem is this: My PRS-300 won't turn on at all, and will not register as a device when plugged in by USB. I have tried charging overnight from a (not sleeping) PC and from a mains charger that I bought to try and solve the problem. With either method a red light comes on for a couple of minutes and then goes off. I was going to try a new battery but having taken the device apart and tested the battery with a multimeter it reads at 4.15V (the battery is a 4.2V not a 3.7 as listed in the service manual So it looks to me that the battery is actually fully charged. I am out of ideas, does anyone have a suggestion? (it is out of warranty) Thanks in advance!

03-26-2011, 01:42 PM	#2
drdann Connoisseur Posts: 64 Karma: 300000 Join Date: Nov 2010 Location: Twin Falls, ID Device: Sony PRS-350	You might want to look at.. https://wiki.mobileread.com/wiki/Sony...shooting_Guide

03-26-2011, 03:30 PM	#3
BoiledMouse Junior Member Posts: 4 Karma: 10 Join Date: Mar 2011 Device: PRS-350	hmm, that page has been deleted, did you mean https://wiki.mobileread.com/wiki/Sony...nd_Reset_Guide? Sadly I can't try any of the things on that page (soft/hard reset etc) as it won't turn on at all :\| Last edited by BoiledMouse; 03-26-2011 at 03:32 PM.

03-28-2011, 12:43 AM	#5
drdann Connoisseur Posts: 64 Karma: 300000 Join Date: Nov 2010 Location: Twin Falls, ID Device: Sony PRS-350	Sorry about that.. I didn't realize it was gone... my suggestion is the old paper-clip in the reset hole and then toggle the slide switch,

04-03-2011, 09:53 PM	#9
BoiledMouse Junior Member Posts: 4 Karma: 10 Join Date: Mar 2011 Device: PRS-350	Thanks, so far I do love it, I loved my 300 so I can't imagine any problem with the 350. I do feel sad about the 300, but it is in my box of bits and components for further experimentation and projects so hopefully it will be used for something useful sometime........... Edit: also wanted to say that it is refreshing how helpful and nice everyone is on this forum. Last edited by BoiledMouse; 04-03-2011 at 10:04 PM.

03-27-2011, 01:48 PM	#4
igorsk Wizard Posts: 3,442 Karma: 300001 Join Date: Sep 2006 Location: Belgium Device: PRS-500/505/700, Kindle, Cybook Gen3, Words Gear	If you press the reset and then toggle the power switch, does anything at all happen?

03-28-2011, 05:57 PM	#6
doreenjoy 01000100 01001010 Posts: 1,889 Karma: 2400000 Join Date: Mar 2009 Device: Polyamorous	Can you give it a good long charge via a mains charger? Sometimes the battery is too depleted to charge via USB, and the battery meter may not be accurate.

04-03-2011, 09:24 AM	#7
BoiledMouse Junior Member Posts: 4 Karma: 10 Join Date: Mar 2011 Device: PRS-350	Thanks very much for all your suggestions everyone, sadly after further testing of the battery and trying all your ideas I had to pronounce the PRS-300 dead yesterday. On the bright side I bought a PRS-350 today and it is awesome

04-03-2011, 02:21 PM	#8
doreenjoy 01000100 01001010 Posts: 1,889 Karma: 2400000 Join Date: Mar 2009 Device: Polyamorous	Glad you found a good solution to the problem. I hope you love your 350.

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