Hello
I have a Thinkpad G41 that will not boot up. A couple years ago after having it for a little over a year my G41 made some beeps and the screen went blank. After that when I would turn it on it would make 3 beeps and would not boot, nothing would come on the screen but the fan did run and battery light came on. IBM said 3 beeps indicated a motherboard issue but they wanted $475 to fix it which I said no way. Recently I tried replacing the motherboard with a refurbished one. That did not work out as it still did not boot up and made a 4-3-1-4 beep sequence. My motherboard was listed as 27R2069 but it was listed that 27R1872 was compatible with it and I ended up ordering a 27R1872 motherboard which was identical to mine but it did not work, not sure if that would have anything to do with it.
When I took my old motherboard out I noticed one of the capacitors was raised and crooked. I thought I might have done that when trying to get the stubborn motherboard off but I saw where that is also an indication of a blown capacitor. The capacitor is a fairly tall silver one with a purple mark at the left hand side and is labeled 508
SVP
68
20
On the other side of the motherboard were 2 similar capacitors but had a 505 on top instead of 508.
I decided I am going to try soldering a new capacitor to the motherboard where the one is raised before ordering another motherboard or sending it out to get fixed. I am trying to spend as little as possible to fix the computer as it is fairly old. Does anyone know exactly what type of capacitors I should use. I could find any with those exact numbers and not sure what they stand for. I read where 40W is the minimum and a 60W soldering iron is recommended for a P4 processor, are the soldering irons you get at radio shack any good? Is there any way of testing or seeing if any other capacitors are blown/bad because the rest look fine. Could there be something that is causing the capacitor to blow or could it just be the bad batch of knock off Taiwan capacitors that have plagued so many motherboards.
I am new to soldering electronics but I am pretty good at following instructions and figuring things out.
Appreciate any advice or tips people can give me.
Some more info about my G41/motherboard
It is a 27R2069 mb Type 2886-79U S/N L3-Ar724
Processor is P4-M 548 Prescott External VGA 93P44275 (nVidiaGo5200)
I have a Thinkpad G41 that will not boot up. A couple years ago after having it for a little over a year my G41 made some beeps and the screen went blank. After that when I would turn it on it would make 3 beeps and would not boot, nothing would come on the screen but the fan did run and battery light came on. IBM said 3 beeps indicated a motherboard issue but they wanted $475 to fix it which I said no way. Recently I tried replacing the motherboard with a refurbished one. That did not work out as it still did not boot up and made a 4-3-1-4 beep sequence. My motherboard was listed as 27R2069 but it was listed that 27R1872 was compatible with it and I ended up ordering a 27R1872 motherboard which was identical to mine but it did not work, not sure if that would have anything to do with it.
When I took my old motherboard out I noticed one of the capacitors was raised and crooked. I thought I might have done that when trying to get the stubborn motherboard off but I saw where that is also an indication of a blown capacitor. The capacitor is a fairly tall silver one with a purple mark at the left hand side and is labeled 508
SVP
68
20
On the other side of the motherboard were 2 similar capacitors but had a 505 on top instead of 508.
I decided I am going to try soldering a new capacitor to the motherboard where the one is raised before ordering another motherboard or sending it out to get fixed. I am trying to spend as little as possible to fix the computer as it is fairly old. Does anyone know exactly what type of capacitors I should use. I could find any with those exact numbers and not sure what they stand for. I read where 40W is the minimum and a 60W soldering iron is recommended for a P4 processor, are the soldering irons you get at radio shack any good? Is there any way of testing or seeing if any other capacitors are blown/bad because the rest look fine. Could there be something that is causing the capacitor to blow or could it just be the bad batch of knock off Taiwan capacitors that have plagued so many motherboards.
I am new to soldering electronics but I am pretty good at following instructions and figuring things out.
Appreciate any advice or tips people can give me.
Some more info about my G41/motherboard
It is a 27R2069 mb Type 2886-79U S/N L3-Ar724
Processor is P4-M 548 Prescott External VGA 93P44275 (nVidiaGo5200)
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