Re: 6050A2465101-MB-A02 schematic need.
Can give brand and model number on CPU power IC? Can help find right schematic.
LiquidCap
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Last Activity: 01-09-2016, 10:07 AM
Joined: 05-22-2013
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Charger IC normal pin values
Anyone know the normal operating voltages of all pins for MAX8731A? Seeing some weird values. Need to know what each pin should read under normal conditions.... -
Re: 6050A2465101-MB-A02 schematic need.
You have this one(attached below)? Google says your board is Inventec ROXETTE....Leave a comment:
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Re: dell latitude 3330 no video at lvds
i tested with a screen and cable that i know works. i got both from another working laptop. didn't see any fuses.
it is almost funny how helpful this community is. even after i've given up and said let it die i still continue to get helpful suggestions. nice environment here
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Last edited by LiquidCap; 08-09-2014, 02:52 PM.Leave a comment:
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Re: dell latitude 3330 no video at lvds
I'm in the process of buying a scope also. Even though i give up on stuff i always ask myself "[B]why did i fail?[/B]" and "[B]what can i do to help if i meet this problem again?[/B]" and the answer was a bench microscope. thanks for the suggestion.Re: dell latitude 3330 no video at lvds
I'm in the process of buying a scope also. Even though i give up on stuff i always ask myself "[B]why did i fail?[/B]" and "[B]what can i do to help if i meet this problem again?[/B]" and the answer wasLeave a comment:
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Re: dell latitude 3330 no video at lvds
Thank you all for the help but i gave up on this. Pins at lvds are too close to each other and extremely hard to test. Even strapping a needle to my test probe didn't help. I still can't find a datasheet for it and the one cyberhack posted doesn't quite match up.Leave a comment:
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Re: dell latitude 3330 no video at lvds
i don't have another panel i can test with. how would i go about checking the signals on the lvds output? how do i know which signals are right/wrong?...Leave a comment:
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dell latitude 3330 no video at lvds
dell latitude 3330 no video at lvds. works fine on vga. the screen definitely works as i tried it another laptop. any pointers? -
no vcore if gpu failure?
I have a laptop that just keeps restarting ~ every second and get no vcore voltage. The laptop does have one those NEC/TOKEN capacitors and i have a good feeling that is the problem. However i also think it can be the gpu and want to try a reflow on it. so the question is: [B]Can a gpu failure prevent me from getting any vcore voltage?[/B] Or is it just the NEC/TOKEN cap?I have a laptop that just keeps restarting ~ every second and get no vcore voltage. The laptop does have one those NEC/TOKEN capacitors and i have a good feeling that is the problem. However i also think it can be the gpu and -
Re: powers on then immediately shuts off
It just might be the GPU. Before the problem of instantly shutting off, the laptop had a problem where it would not output any video(LCD nor external vga) sometimes when it boots.
Anyways, realizing my lack of knowledge in electronics I've decided to learn some basic electronics before going any further. I'll find some free resources on the internet about electronics and read up on them. Thanks to all of you for your help....Leave a comment:
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Re: powers on then immediately shuts off
sorry for taking so long to reply. how would i trace the short? what exactly do you refer to as a short?
sorry for my lack of knowledge in this area. i do basic pc repairs(swap parts out, which is easy) but i want to take my skill further by actually trying to repair specific components and not just replace them. Fixing this laptop for actual use isn't even important to me. it's mostly for the learning experience. you guys will definitely see me roaming this forum more often from now on.Leave a comment:
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Re: powers on then immediately shuts off
HP Pavillion DV4. Heatsink is firmly fastened to bracket.Leave a comment:
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Re: powers on then immediately shuts off
sorry but I'm pretty sure it's not overheating. it shuts off approx 1 sec after it turns on. fan is also clean.
Thanks for the response. I'm an open person, i'll take any suggestions anyone throws at me. It helps me learn by trying out different suggestions. I hope to one day give back to this forum also. But i guess i have a long way to go....Last edited by LiquidCap; 08-22-2013, 07:51 PM.Leave a comment:
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powers on then immediately shuts off
I have a laptop that powers on then immediately shuts off. It does this even when benched(board taken out of laptop; no battery connected).
What things should i check first? -
Super I/O chip, on/off pins
One day while poking my probes around on a laptop's super i/o chip I discovered i can turn the laptop on/off by shorting the right pins. My question here is can this be done with every super i/o chip one every laptop?
Another question: Can this be done the same way with desktop motherboards also? -
Re: Reading schematics: Skill or Experience?
Agreed.
Thanks for the link. It seemed reasonable that I have to learn the basics first but i guess i just asked because i wanted an easy way out.
Guess my long journey down the road of electronics starts here.
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Reading schematics: Skill or Experience?
So how do I properly learn to read these schematic diagrams? Is there any online resources i can learn from? Or does it just come from experience of reading couple hundred schematics? Are they meant to only be understood by the people who make them? The goal here for me is to just look at a schematic diagram and instantly know whats going on.
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Re: Is it shorted?
Thanks for the help. I found the problem, it was a faulty mini-pci graphics card. The laptop would not turn on when this card is inserted. I also tested for a short on the mini-pci card itself and indeed i did find one.
@twbranch -yes i don't trust the continuity tester either.
@anno -you are correct, the 045 reading wasn't a short after all.
ps: This is great forum.Leave a comment:
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Is it shorted?
I'm trying to test a laptop motherboard to see if it is shorted. The way i've been told i can find a short is to do a continuity test from each power inductor to the ground of the motherboard and if my meter reads 000 to 002 then that is considered a short in the area where the power inductor is located.
All inductors i tested were fine except for one which read 045 and gave me a beep on my multimeter. Is this considered a "short" as well? Is this the correct way to test short-circuits?
Please also note that i do NOT have much experience with electronics. Thanks...
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