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P50 Not Turning On

P1/P40/P50/P70 Series
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richramo
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Joined: Sat Apr 23, 2011 8:16 am
Location: Sydney, NSW Australia

P50 Not Turning On

#1 Post by richramo » Tue Oct 12, 2021 7:36 am

I picked up a P50 on eBay but without a charger or battery. (the photos suggested that booted to the Lenovo Logo)
I have a few other Thinkpads laying around the house with 90W chargers, so I tried to power up the P50 using one.

When I turn it on, a few lights flicker on the keyboard, but unfortunately, it doesn't power up.

I am trying to figure out if it won't power up because I'm not using the original 170W charger and a battery installed? Or if it should at least power on with the 90W charger, there could be another problem.

I am trying o diagnose whether it isn't working due to the lack of power before I Invest money into restoring it, or if whether, in theory it should work, or if anyone else has been able to power up their P50 from a 90W charger without the battery installed, as I am concern it could be a motherboard issue.

Any help would be appreciated.
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X61s - C2D L7500 1.60Ghz, 2G, 100GB | X31 - PM 1.4Ghz, 1G, 40GB | T40 - PM 1.5Ghz, 512MB, 40GB | R40 (the beast) - PM 1.4Ghz, 256MB, 20GB | 390X - P Celeron 400Mhz, 96MB, 6.4, | 755c (Golden oldy) - 486DX7 75Mhz, 20mb, 510mb - Still works :) | 730TE Tablet

RealBlackStuff
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Re: P50 Not Turning On

#2 Post by RealBlackStuff » Tue Oct 12, 2021 9:28 am

According to the P50 frubom/parts list and the PSREF, only a 170w PSU is listed, so that may well be your problem.
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Brad
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Re: P50 Not Turning On

#3 Post by Brad » Wed Oct 13, 2021 3:12 am

I think RBS maybe on to something.

Hopefully you can borrow a 170w adapter to try. If you were closer I could send you one to try.

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MikalE
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Re: P50 Not Turning On

#4 Post by MikalE » Wed Oct 13, 2021 5:33 pm

It wouldn't surprise me to know it won't boot on a power supply with 80 watts less that what it requires. Startup requires more power than just having it sitting at idle.
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richramo
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Joined: Sat Apr 23, 2011 8:16 am
Location: Sydney, NSW Australia

Re: P50 Not Turning On

#5 Post by richramo » Thu Oct 14, 2021 8:18 am

Thanks for your help all. Found a friend who has a W541 and I was able to borrow their 170W charger. The P50 works like a dream. Crisis adverted. I would have been very disappointed if it was a motherboard problem.
Thinkpads
X61s - C2D L7500 1.60Ghz, 2G, 100GB | X31 - PM 1.4Ghz, 1G, 40GB | T40 - PM 1.5Ghz, 512MB, 40GB | R40 (the beast) - PM 1.4Ghz, 256MB, 20GB | 390X - P Celeron 400Mhz, 96MB, 6.4, | 755c (Golden oldy) - 486DX7 75Mhz, 20mb, 510mb - Still works :) | 730TE Tablet

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