Anyone know if or where I can obtain a schematics diagram for a MCP61PM-HM (Nettle2) motherboard ? I want to replace some bad caps on this board. I would love to have the correct ones on hand before pulling the board out of the case.
Need schematics
- Thread starter Frank Jr.
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Unlikely you will find this doc. Reason is these boards are often different based on the rev number which changes too often to publish schematics. Best to pull the board and look at the caps and replace with actual values. Better yet, just buy a replacement board. You may have trouble soldering a multi layer board technology.
Thanks for the replies guys. The PC still works but only boots up sometimes. I can see the tops of the bulging caps. One leaking from the top. I can't read the values without pulling the board though. This is just a spare PC out of the closet. I know I can purchase a replacement board but just don't think it would be worth it, but then again maybe it would. It is about 2 1/2 years old and has decent specs.. For the cost of the caps I think it would be worth a shot.
Well I took out the mobo. Just for the heck of it, here are some pictures of the bad caps. All together I found 8 of them, all made by Toshin Kogyo (Tk). (6.3v 1800uF) I just checked, I can by 10 Rubycon caps for 9 bucks plus shipping. Obtw I know it is a little dusty. It will be cleaned up.
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You should have no trouble removing the capacitors and soldering in the replacements (as long as you're comfortable with a soldering iron). I've done a number of repairs like this and I have found that the capacitors can be removed by simply pushing the cap over towards one lead which levers the other lead out of the board. If the lead breaks off, you can use needle-nose pliers to pull the lead straight up. If that fails, I resort to the soldering iron.
The advantage to the mechanical removal is leaving the plated holes open and ready for the replacement caps.
Good luck!
The advantage to the mechanical removal is leaving the plated holes open and ready for the replacement caps.
Good luck!
Thanks for the tips, I have no problems soldering other than being very careful not to mess up a trace........
Just an update. The capacitors came in the mail Friday. Tonight I replaced all 9 of the 6.3v1800uf caps on the board. From start to finish it took about an hour and a half. It is up and running well. I have to thank Troy Brown who owns thecapking. I ordered 10 of those caps which cost all of 3 dollars with free shipping. They arrived in two days. I will leave it on all night and sometime tomorrow it goes back in the closet for a spare if need be. Thanks everybody for the help and advice.
Obtw if anyone has a HP m8300f look out for those bad caps on the motherboard.
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Congrats on your success. I should file this thread away for future reference as I have an HP m9280f here. It would take me more than an hour and a half just to get the MB out though. The case is packed with 6 hard drives and two BluRay burners. It's my HD and BluRay edit computer.
Hard drives: 2 - 1 Gb for raid C drive speed and 4 - 1 Gb for D drive speed for HD video editing. When working with 1080p x 1920 video files it is very fast! Has 8Gb of RAM and 64 bit OS as well. Bad news is one of the original hp drives, the HDDVD / Blu Ray ROM drive just failed yesterday so I'm shopping for a replacement. Looking for a faster burner anyway.
I thought I was doing good with two WD 320 Gb 7200 hard drives in mine. (lol) For what I had used it for in the past it was just fine though. My current PC is an HP p6140f which has a dual quad Intel q8200 2.3 Ghz running W7 64, the older m8300f has the AMD Athlon 64 X2 6000+ 3.0GHz processor running Vista 64 which seems to be a bit faster to me. I do not claim to understand that much with respect to processors but thought the quad core would have been faster. My Dbl E degree I obtained back in 83 isn't of much help these days.
Sorry about your drive failure but at least they are cheaper now than when they first came out.
Frank- it's a low priority these days to fix it even with the lower prices. The drives I've been pricing are in the $150-$200 range. I'll get to it maybe by the end of April. My budget went to pay for the home theater 3D upgrade last month so I'm only fixing emergencies until my checking account is replenished. The reason for the large raid stack had to do with HD video editing. I needed very fast I/O on the drives to be able to edit with 4 video tracks of Full HD using real time preview. The ram and Q9300 processor is mostly for rendering speed but the video clips source from the hard drive stack as a work drive. Once the video is edited I render to an external 1.5Gb drive that connects simply by a USB2.0. I got the system to a good balance of cost vs. time spent on video edit projects. To improve on it would not be cost effective.
The system is basically a stock hp box where I upgraded the speed of the ram and went from 4Gb to 8Gb. I upgraded the power supply and squeezed in a commercial unit at roughly 3 times the wattage. Added one BluRay Panasonic 4x burner and the hard drives. Then added a FW800 card, a eSATA ( which I never use ) and that's about it. I chose the hp box because it was a good economical starting point for my planned upgrades. It runs the stock Vista Home 64bit OS.
The system is basically a stock hp box where I upgraded the speed of the ram and went from 4Gb to 8Gb. I upgraded the power supply and squeezed in a commercial unit at roughly 3 times the wattage. Added one BluRay Panasonic 4x burner and the hard drives. Then added a FW800 card, a eSATA ( which I never use ) and that's about it. I chose the hp box because it was a good economical starting point for my planned upgrades. It runs the stock Vista Home 64bit OS.
