I miss that old good times when You could just replace cells in battery to make it fully working again š
ElectronicNoobBlog
My "fight" with electronics devices :-)
Author Archives: ENB
Cracked brass water pipe fitting cracked and start leaking
Here it’s a pictures of my T shape brass water pipeĀ fitting that cracked and start leaking.
Smart-UPS APC 750 – replacement battery pack and testing true sine wave on oscilloscope
Here are pictures of me testing Smart-UPS made by APC model APC 750 before replacement of batteries.
On oscilloscope i check true sine wave while working on battery (while testing on a power supply).
As You can see there is a beauty-full sine wave!
There are also visible connections in case You have that ups without battery.
Why always double check (cheap china antenna) before connecting up to radio!
Description says it will fit DP3600 but how about reality?
Video:
Some random UPS APC simple repair job – no DC charging – failed capacitor
Some random UPS APC simple repair job – no DC charging – failed capacitor, after replace working perfect.
They are very old photo and i don’t remember what king of model it was…
One of weirdest and simplest repair – not properly fitted DIL IC pulled out by ghost?!
Here are pictures of weirdest repair job i had…
I had not working FDD midi drive, after opening i found EPROM not properly fitted inside socket…
They are hard to pull out and enclosure was sealed so nobody tampered it…
I can’t imagine how much “G Force”Ā should be apply to lift that ic from socked… of course enclosure don’t show any sights of shock / drop.
After pressing it down, everything start working correctly…
“Steel ball monkey fist” self defense keychain from China vs reality
pictures
and video
Teardown of Emerson sidewinder LED flashlight IR (Coyote Brown) em8447
Here You can see terrible build quality ofĀ Emerson sidewinder LED flashlight IR (Coyote Brown) em8447.
Teardown battery PMNN4104A for Motorola DP3600 radio
I openedĀ PMNN4104A NiMH 7,2V battery used in Motorola DP3600 thinking about replacement cells inside for Eneloop but opening was almost impossible without damaging inside circuitry and plastic enclosure.
In my opinion it’s unfixable / not worth of fixing . See pictures and video for Yourself.
Continue of Fixing PHILIPS HF3451 Wake-up Light clock backup battery (capacitor)
Finally i got replacement backup capacitor.
After soldering new cap and testing problem was solved,Ā clock can be unplugged and after powering back time is still counting.
