IBM/Lenovo Thinkpad R500 dead

[tibd]

Re: IBM/Lenovo Thinkpad R500 dead

YES, and whether voltages pass at first two mos within power-in circuit and on coils.

[Thermaltake]

Re: IBM/Lenovo Thinkpad R500 dead

YES, and whether voltages pass at first two mos within power-in circuit and on coils.

But that on the picture is not for voltage it's for diode.

Isn't this for voltage ?




So when I measure voltage it should be on one coil 3.3 and on other 5V if I get it right. What about in diode mode it must be 0 or ? Oh and when I measure voltage I put red probe on ground and black on the one side of coil like on picture and same when I do it in diode mode, right ?

[ktmmotocross]

Re: IBM/Lenovo Thinkpad R500 dead

black on the ground and go with red from adapter connector

[Thermaltake]

Re: IBM/Lenovo Thinkpad R500 dead

black on the ground and go with red from adapter connector

I checked adapter connector black on black red on red both of them they are 2 black wires and two red and they both give 20.28V I disconnect the cable from the board while measuring, so connector is okay.

How to test mosfets ?

[tibd]

Re: IBM/Lenovo Thinkpad R500 dead

But that on the picture is not for voltage it's for diode.

Isn't this for voltage ?




So when I measure voltage it should be on one coil 3.3 and on other 5V if I get it right. What about in diode mode it must be 0 or ? Oh and when I measure voltage I put red probe on ground and black on the one side of coil like on picture and same when I do it in diode mode, right ?

This one in ur pic is the diode mode with which voltage drop to ground can be measured. Its also works to detect if any component is shorted to ground. U can't use this mode to measure voltages. You should put the multimeter on V DC (which is the white symbol, within V), put your range at x10.

[saqib]

Re: IBM/Lenovo Thinkpad R500 dead

if 3 and 5 volt in coil change keyboard bcoz power butn on it

[saqib]

Re: IBM/Lenovo Thinkpad R500 dead

also mention on pcima card on pic

[Thermaltake]

Re: IBM/Lenovo Thinkpad R500 dead

This one in ur pic is the diode mode with which voltage drop to ground can be measured. Its also works to detect if any component is shorted to ground. U can't use this mode to measure voltages. You should put the multimeter on V DC (which is the white symbol, within V), put your range at x10.

Ok, I get it like this



And I measure like this power on jack while he was disconnected from the board I was checking if there is maybe problem in dc jack but it seems to be okay giving normal voltage to the board. So If I get it right black always needs to be on the ground and with red probe I touch mosfets and coils ? How to touch mosfets I mean where and do I need to touch coils just on the one side of connector ?

if 3 and 5 volt in coil change keyboard bcoz power butn on it

But there are not chips under that only slots

[Thermaltake]

Re: IBM/Lenovo Thinkpad R500 dead

Is this correct way to measure voltage black (ground) where someone on previous pages told me and one side on the coil and other coils and does it matter which side it is or ? I will also remove that black tape to see other stuff under them. Can someone tell me how to measure mosfets please.

[ktmmotocross]

Re: IBM/Lenovo Thinkpad R500 dead

dude u r useless. throw it to can

[Thermaltake]

Re: IBM/Lenovo Thinkpad R500 dead

dude u r useless. throw it to can

Why ? I mean still learning all this I am not an expert as I already said, it's not bad thing to ask for help.

I think you've already did what's the best thing to make your laptop back.
If you look on websites such as www.pcmag.com and www.laptoprunner.com, it states there that laptops are disposable . This cause of motherboard tends to overheat due to heavy usage especially if it's a gaming laptop. So I suggest get a Desktop.

It's not for gaming it's for my mom she is reading news on internet