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Hi guys,
its been around 5-6months since i left this board on side to rest my brain cells and now came back to try and repair it again.
The laptop in question has issue where it gives error code on power on which is 2red and 3 blue
In short, by Dell specs this means "Memory not detected: "
Now one important thing the laptop would turn on fine when i leave it in the refrigerator for 5-10min and i could work\play games with it for days and months as long as i dont turn it off
but after a while this trick stopped working as wel
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In recent months the screen has been getting more and more dim. If that was all, I'd suppose the problem would be the backlight (LED? LCD?). But I've noticed this really weird symptom: switching to the EPG screen restores normal brightness! And then, even weirder, when I go back to the programme, for a moment the programme is at normal brightness and over the next 1-2 seconds it gradually dims down again.
Last time I looked in a TV it had EHT flyback, so I'm no expert. I do sometimes repair computer monitors and power supplies, most often when there's bad caps.
Anyhow,... -
Problem description:
My UPS requires new batteries every ~3 months; in this time frame, an average of about 5 to 10 power flickers or short power interruptions (< 2 minutes) occur. After an average of 3 months, a new pair of batteries begins to fail to keep the UPS up during any flicker or power interruption. The load it powers is a single computer/workstation running 24/7 with a continuous consumption between 200W to 300W.
UPS model:
The Atlantis 1001 is a non-inexpensive (~120€ back then) home/office offline UPS, rated 1000VA, 600W, designed for two 7Ah... -
I couldn't find any other thread that matches my TV problem but have been told it is a common fault. The fault is a flashing LED as if it is in upgrade mode that happens after a few seconds and stays forever. I can't remember all the tricks that have been tried like holding the select button when powering on but nothing worked. The shop sent me a flash drive to plug in a USB port but that did nothing either and they said it was dead which is disgusting for a piece of solid state electronics. I took the back off eventually after removing 34 screws to check for blown caps but everything looks new... -
My T14's (NM-C801) main USBC input keeps failing every few months. Initially, it worked fine for several years. The symptom is that once powered from the main USBC port using a 65W power brick, after some time (minutes, hours) charging will fail completely. Powering from the secondary (docking) USBC input still works. This laptop is basically always plugged in. The first time it happened, it took me a long time to find that the FPF2281 over-voltage IC for that USBC input was at fault. When the issue occurs, it will continuously reset power delivery negotiations with the power brick -- according...
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