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What do you mean for "regular shop"?Comment
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First the professional channels, RS components, Distrelec, Conrad, Farnell, TME, Digikey, Mouser.. if there isn't you can watch some ebay shops specialized in IC and with a lot of good sells, UK, France usually is OKComment
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I replaced the ic several times from different sellers. Unfortunaly nothing worked. Also ill tried all the tips you guys provided me. And iam greatfull for that.
This morning i walked into my shack, and the screen was cracked thanks to one of my kiddos.
So the case is close now.
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Hi,
My wife's 2019 MBP died a couple of weeks ago and I have been trying to figure out what is wrong with it. I have an electronics background and equipment but never tried to diagnose a modern MBP before. I have the board view and schematics already and have been climbing the learning curve steadily!
Initial fault was no power with USB ammeter showing 5.19V @ around 12 to 35ma. I won't go into all the initial debug I did because ultimately I found R7900 to be high resistance when it should have been a 0ohm link.
So, going from the power sequence... -
Hi all,
As the title suggests, how can I be sure that my EC chip is really dead?
I've recently gotten into this hobby of laptop repairs, and have successfully brought back to life a couple with some easy fixes, mostly shorted caps.
Now I'm working on HP Probook 455 G8, that had some "devil" run around on 3V line, burning a bunch of stuff. Luckily I have a dead 455G7 (for spare parts) so I managed to fix it (swapped burned parts) to a point that it will charge (both on barrel jack and usb-c), but it doesn't want to turn on. There is a 3V3 on a keyboard... -
hello guys,
i need help to repair a edm-033 ps2
history : as always hdmi port and usb ports destroyed after unplugged
after change them, ps5 dead too : 1 beep, no blue light. after inspection 1.8v power was shorted, and because of dead panasonic chip. after remove it : no short anymore
so i changed it
now i have got 5v stby,, 3.3v stby, 3.3v power, 1.8v power and no short on them
but the ps5 is dead again : 1 beep, near 10 seconds with power lines and then off, no blue light ...
i don't see any projection of liquid metal on pcb.
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Hi guys!
I searched for the term "dead short" in the forum but no specific thread came up however if I'm just blind and couldn't see the thread talking about this please forward me to that direction.
So my problem is I don't know how to find the source of a dead shorted voltage rail. Dead short = ~0 ohm resistance.
I have two VGAs (HD 4850 and HD 4870), both dead shorted to ground on the memory rail. I have the boardview file for the 4870 and the memory rail consists around ~7892346 capacitors...
I have a bench PSU and if I try to inject voltage the voltage... -
Hello everyone hope all doing well!
I have this PSU (GPS450-AA delta oem) around for like 4-5 years and I had it recapped early 2020 or 2021 with mostly UCC KY and Nichicon PW's. The bulk was and still is fine, the original Ltec's were bloated and empty. The previous issue was some major coil whine noise and at times random shutdowns when going idle. Today it started tripping the mains breaker and I think I have dead APFC mosfets (20N60C3). Right now upon checking I have the Q1 and Q3 FETs dead so far and I guess those are responsible for the PFC circuit. The only thing I care is If there...
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