The problem seems to be happening more frequently, and this morning it was a struggle to get the computer on. Trying to troubleshoot the external power supply, I have a couple of external power supplies from other ThinkPad (A21P and T40), but both of them indicate 16 V. The one on my T60P says 20 V. Are these 16 V power supplies usable?
At any rate, does anyone know who is the OEM for the AC Power Supply/Charger for the T60P? I'm going to troubleshoot this problem by getting a new AC power supply, and Amazon has a number of third party charger made for this unit. If one of these Chinese vendors is the OEM, I'd feel more confident in buying one at a good price, rather than spending 30 bucks for an experiment.
Alternatively, is anyone using a reliable 3rd Party AC power adapter from Amazon with their T60P?
Would anybody know if running the following older BIOS on my Win7 T60P might be a possible cause of my problem?
Bad capacitors in AC adapter may cause voltage drops at load, while at idle voltage can be good.
Do you have a working battery? Do you have any problems booting Thinkpad at battery?
What the problem to flash modded 2.27 BIOS with SLIC2.1 and no whitelist?
I considered that the non load test wasn't definitive, which is why I mentioned it. That's great info. My adapter never gets hot, just warm, bit I realize that is not definitive of anything.
I haven't used a battery in my laptop for awhile. On that note, do you know of any reputable, third party batteries?
I haven't updated the BIOS because of many stories of PCs bricked during BIOS updates. The last time I did a BIOS update I tool it to a technician, and, weirdly, he encountered a glitch of some kind, but he sorted it out. Do you think the BIOS could be the culprit? In the meantime, I disabled power management in BIOS on my last start up.
You can try third party batteries, not bad choice, but lifetime of these China batteries is about 3 years. Also you can find used genuine batteries with low wear level for the same price.
As for AC adapters I don't recommend buying third party - small weight, bad caps, heat problems and wires braking all the time. Look for used genuine 20V 90W adapter. Beware of High Copy junk!
About BIOS I think it can't cause boot problem at early system initialization. But if you decide to flash it - with working battery, AC adapter plugged in and bootable CD BIOS image you are good to go.
I started the vomputer ten or eleven times normally.
This morning the problem returned, but I think there is some clue in this.
Regarding batteries, there have been recalls of Lenovo batteries, which caught fire as with some other manufacturers, so I wouldn't say manufacturer batteries are perfect.
The one thing I discovered this morning is that the power socket on the back of my T60P is somewhat loose. Is it possible that by unplugging at the AC outlet (UPS) or at the ThinkPad' s socket sends a little jolt of current that compensates for the loose socket loose socket? Is the loose socket fixable, or is it an unfixable part of the motherboard?
One of my persistent ideas in troubleshooting this is that there is something going on with sleep/hibernation. It accordance with this I simplified everything in power options, making sure that the T60P never goes to sleep or hibernate. When that didn't quite work, I went into bios and shut down power management. Interestingly, each of these attempts seem to have a temporary effect.
Yesterday I found out that sleep/hybrid hibernation is buggy in Windows 7. So I used a Microsoft fix to shut that down within the administrative CMD window. After I did that the laptop started normally all day.
This morning, the problem returned, requiring an unplug replug of the power jack. So the one consistent thing about this problem is that when the laptop is off overnight something happens...possibly something loses charge or drains when the laptop is off for several hours.
In the morning when the laptop won't start, unplugging the power ac adapter jack from the back of the T60P and plugging back in allows the laptop to work when pressing the power button. However disconnecting the ac adapter's power cord from the AC outlet and re-plugging does not work.
Somthing wrong with the"
power socket on the laptop?
the power cord from the ac adapter to the laptop?
the ac adpter's output to the laptop?
- Posts: 16126
- Joined: Sun Feb 25, 2007 11:28 am
- Location: Brodheadsville, Pennsylvania, USA
You still don't have a battery installed, correct?
Power socket could be a culprit but it could also be a sign of a motherboard getting tired...
George (your grouchy retired FlexView farmer)
AARP club members:A31p, T42, T43pSF
Abused daily: T61p
PMs requesting personal tech support will be ignored.
1. Try another power supply, any make or age would do just to use for diagnosis.
2. Fit another power connector
Both are usually available on eBay. In the meantime your replugging routine seems to work.
2 x T20
2 X T23 + 6 breaking for parts
1 X T23 with Samsung 840 SSD and XP Great combination !
4 X T60
5 X T61
2 X T601 15"
- Senior Member
- Posts: 802
- Joined: Fri Oct 17, 2014 8:13 pm
- Location: kingston, ontario, Canada
Advice for anyone after my experience:
Try different pair of memory modules, move usb stick to different usb ports, it is true that happened, even different power adapter, was finally isolated to one bad power adapter since this notebook has dead battery made it more sensitive than other HP computers of all types (ultra slim and notebooks experienced screen brightness minor stutters) that share same power jacks (19.5V). Thinkpads of this vintage has swappable power jack that also plugs into motherboard, get new one from ebay actually they are not fakes to let you know. This requires partial disassembly to get motherboard with metal cage out of plastic shell because one screw for holding power jack in place by metal cage is accessed from under.
I put an ad in the Marketplace for a new one.
- Similar Topics
- Last post
Who is online
Users browsing this forum: No registered users and 14 guests