Message me if so thanks
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hi everyone..
i have a dead graphics card (gtx680)
the gpu chip was faulty and shorted to ground (VRM still intact btw)
so i remove the chip and just realize that bga pad underneath the gpu chip is kind of bump or swollen.
and suprisingly the pcb still good. no short circuit and i checked every pad and all still have good connection at every rail they should be
so i just wonder what is serious problem from the pcb bump like this that i may still didnt know this time?
or maybe some of you have been experiencing with effect from this kind... -
Just archiving everything related to bumpgate since most stuff has disappeared from Google. Maybe people will finally take the time to read some of it and stop shouting "reflow gpu" at every occasion but rather try to understand what the real issue is…
Interesting parts about the failure analysis are "Why Nvidia's chips are defective" and "Why Nvidia's duff chips are due to shoddy engineering"
May complete this post at a later date with more details.
Basically issue is a combination of thermal dissipation of the chip with hotspot,... -
i have a bluepoint digital volt meter that does not turn on unless i hit it or shake it.
If i shake itnor place it down hard it will shut off
I opened it and noticed a component has some odd wear on it
I tried looking it up on digikey but it doesnt show up
Can someone help me identify the component?
Hopefully this will fix the issue... -
Hi everyone!
I have a Sony KD-65A1 TV with a fault – 4 red LED blinks. After disassembly and visual inspection, I found that the G76 power board and DKA board had been replaced. It is also possible that TCON was replaced, but I am not sure – there are a few marker marks that could be factory-made.
Based on assumptions, the previous service attempted to solve the issue by replacing potentially faulty components. I decided to investigate further, found a service manual, and figured out a way to power up the power supply unit autonomously and put the OLED panel and... -
The ISL88739 & ISL88739AHRZ are a highly versatile combo battery charger
configurable for operating as either a Hybrid Power Boost (HPB)
charger or a Narrow VDC (NVDC) charger, supporting 2-, 3-, or
4-cell batteries. Both configurations allow the battery to work with
the adapter together to supply the system load when it exceeds
the adapter capability, referred to as system Turbo mode. HPB
charger configuration reverse-boosts battery energy to the system
bus to help the adapter provide the system power in Turbo mode.
NVDC charger configuration...11-05-2024, 03:28 PM
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