Is there a sure way to tell when a chipset or any other BGA chip is fried or it just needs a BGA reflow/rework. I have resurrected a few desktop by reflowing the southbridge and northbridge but reflowing won't work most of the time in my case. Laptop motherboards are a different story, I have resurrected many HP DV series laptops by reflowing (I'd say about 90% success rate). Is there a way to tell when a motherboard has a fried BGA chip?
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Guns don't solve problems. I'll take 12
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Re: Sure way to tell when chipset (or any other BGA chip for that matter) is burnt on
If it looks discolored then that is a good sign it could be fried and not just need reflowing/reballing. Other than that the only sure way is to test each pin. -
Re: Sure way to tell when chipset (or any other BGA chip for that matter) is burnt on
How does one go about testing each pin?Guns don't solve problems. I'll take 12Comment
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Re: Sure way to tell when chipset (or any other BGA chip for that matter) is burnt on
Get the spec sheet for the BGA you are testing and start checking each pin for the proper signal.Comment
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Re: Sure way to tell when chipset (or any other BGA chip for that matter) is burnt on
Scope... some boards have pads near the chip. See if voltage is going into it.Comment
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Re: Sure way to tell when chipset (or any other BGA chip for that matter) is burnt on
There is a true and tried way to tell, but only a few people really know. Hers the trick...look really close (might have to get a magnifying glass) and if it says 'nvidia' on it and its not on a video card, that means its not worth the botherCap Datasheet Depot: http://www.paullinebarger.net/DS/
^If you have datasheets not listed PM meComment
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Re: Sure way to tell when chipset (or any other BGA chip for that matter) is burnt on
surely you can get new nvidia chipsets on ebay, why you'd want to, I don't know, but I guess it would be possible to replace it if you had the tools."Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
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Re: Sure way to tell when chipset (or any other BGA chip for that matter) is burnt on
nah I wouldn't buy new chips and replace them, I just want to be able to tell if the chipset is bad so I don't spend time messing with the boardGuns don't solve problems. I'll take 12Comment
their GPU's aren't strangers to sudden death too.
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First post -Intel NUC 10i5 -BXNUC10i5FNH not powering on -IC burnt- request for IC details/datasheetHi all,
I came across this very active forum with knowledgeable folks on electronic circuits and components, while google searching for the details of my burnt IC marked 7603 in Intel NUC board. I joined this forum today and this is my first post here.
I recently got an Intel NUC 10i5 and had installed Linux Mint and was using it for about a month when it died suddenly and did not power up after that.(Power Adaptor is ok). When I opened the NUC , there was a burnt IC marked 7603 (and ILCB in second line). I am unable to find the details/datasheet of this IC. I will be grateful if... -
Hi guys
This Zotac GTX 260 had a high side MOFET on one Vcore VRM phase short circuit Drain to Gate (Not short Drain to Source)
This has burnt out the drive IC L3E (ADP3110A) and also an SOT-23 device very close to the driver IC. According to the PCB markings 'Dxxx' this is likely to be a diode.
Basically the VRM has 4 phases, two powered from one 6 way connector and two powered from the other 6 way
I would assume each pair of phases are basically identical, the burnt out phase has SOT-23 devices WW1 plus the burnt one.
The good phase... -
I picked up this Precision 5550 to fix up recently, and found that the ISL9538 chip was burnt on pin 14 (CSIN). The two left side Type C ports negotiate at 20v, and the right side one only negotiates at 5v. I also found the EMI protection diode, DT35, was burnt on that side. I pulled the ISL9538 off, checked for any other obvious shorts, repaired the pad, and put a new one on. Now, I still do not get power, and there is a rapid clicking sound from somewhere on the board that I can't pinpoint.
Here are the voltages measured at that chip:
To note, DCIN at Pin 17 is low,... -
Hi Dear Friend., I am working on a Apple MacBook Pro A2338 820-02773-A. The history was that the AON Rail on the Trackpad connector JT400 was burnt. After I removed the burnt connector, I tested with the meter & no shorts. Connected the USB C power & all booted fine, no problems at all. I soldered a New TP connector put in the old trackpad with a brand new Flex cable. The laptop beeped in the start but no display. I removed the connector & the display was fine again. USED a known good Trackpad & a Flex cable, even with this still the same problem. I checked the connector whether... -
I picked up this used Bose Acoustimass 10 IV speaker system. Speakers seem to work fine, but the subwoofer does not make any noise. So I took apart the unit and found some obviously failed (burnt) components:
- 1x 3.14 A @ 250V main circuit fuse
- 1x bridge rectifier GBU601. there's actually two of these on the board, one is obviously burnt and the other does not seem to have any anomalies like shorts. However I figure may as well replace both.
- 2x diode. This is tricky because the only markings I see on it are: "617 402". No current rating or anything else....
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