Ok so i have a dell presicion M65.got it for free.ok so the person that had it said it had a bios password no problem for me.but i got it home and plugged it in and nothing no lights no LEDs dead.so i opened it up down to just the motherboard.plugged the AC adapter in and still nothing.but i noticed that the board is getting some power 2 chips get really hot one of these chips is a maxim 8731e it gets so hot that it'll burn ur fingure.heats up instanly 1-2 secs.and if left powered up u can smell it cooking. also the other chip is located below the wwlan card slot cant fully read it but it has "tps" on it.it gets hot aswell but not burning hot and it seems to get hot cool off the repeat over and over.something to point out is the maxim chip doesnt get hot at all when just the battery is powering the system(still dead no lights at all)the battery has a full charge swaped out of a working M65.when power is applied to the system AC\battery or both nothing no fan no sounds just the hot chips on the board.i have the time to fix it just not real sure where to start.any ideas would help. even radical ones ill try after all it was a complety free laptop.the guy i got it from said that last time he messed w\ it that it did power up to the bios password screen.he might have been mistaken tho.i have the stinking password for this machine just no life at all in the machine?if i remove the TPS chip (the one that gets warm not cooking)in theroy would the laptop still work w\ out this chip? cpu,mem,adapter,battery is good swapped it w\ a working M65. PLZ help
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Re: presicion M65 MB dead?
[QUOTE=2 chips get really hot one of these chips is a maxim 8731e it gets so hot that it'll burn ur fingure.heats up instanly 1-2 secs.and if left powered up u can smell it cooking. maxim chip doesnt get hot at all when just the battery is powering the system(still dead no lights at all)the battery has a full charge [/QUOTE]
Welcome to the forums Joeman, The Maxim chip is the battery charging controller so it makes perfect sense it does not heat up without a/c. It is also used as a power o.k. check to perform power up and boot. The tps chip is most likely a blown mosfet , Shorted internally. will not lie to you swapping the MAX8731 is a pain in the @#%$ without the proper rework station. The tps chip you will definitely need the number (either from the chip or schematic) to check it out tho. -
Re: presicion M65 MB dead?
tps is a ti prefix for their dc-dc converter chips.Comment
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Re: presicion M65 MB dead?
DOH! I thought he wrote fds, I really need better glasses...Originally posted by kc8adu
If I remember correctly those are found in the 5v sections (amongst others) for USB power. I had one that was having trouble booting, chip was heating up. It ended up being a broken off piece of a thumb drive stuck in usb port.Comment
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Re: presicion M65 MB dead?
Sorry to say i gave up on the M65 and am using it as a trash board(transplanting other chips ect.. from it)just got tired of it after 2 week steady 5+ hours a day messing w\ it.Have moved onto other more promising things.like a V2000 that will not charge the battery when its running but will charge while its off?ill make a new post reguarding that one thanks.
Thanks for the offer on the d820 sche. chevelle_nut!!!!i had already trashed by time i saw ur email
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