Fitbit Charge 3 charging pinout?I was looking for the pinout earlier and nobody on the internet had the answer... I ended up buying a charger clip and...
Réponse à : « Fitbit Charge 3 charging pinout? »From left to right: (1) +5V (2) not in use (3) GND
Réponse à : « Kilburn no sound from speaker »WARNING: VERY LONG POST One of my coworkers asked me the other day if I could take a look at his Marshall Kilburn speaker to figure out why there’s no audio coming out at all. The speaker would charge the battery, turn on, select the source input and even connect to bluetooth, but absolutely no audio playback whether connected with audio cable or bluetooth. The speaker was not exposed to the elements, it simply decided one day when he turned it on to not play any audio. ''I disconnected the AC power and the battery'' and opened up the unit to inspect the board for obvious signs: burnt components, dislodged connectors etc., but found nothing unusual. I had a hunch that something went wrong on the audio part of the board, but being unable to find the schematic, I started with the data sheet of its audio “brain” - U10. This chip is NTP8230 and you can get the data sheet here: http://www.zpxic.com/manual/NTP8230_icpd....pdf This was enough to get me started on checking the voltages ( I reconnected the...
Réponse à : « What components need replacing on the Logic board? »With all due respect for the great investigative work done by Michael (and Willi) I have to admit that John the Aussie tech was right on the money with his answer. It appears the Thunderbolt Cinema 27" is affected by the same plague as the 27" Imac (2011), which is....(drum roll)...the LG display. Despite the fact that the iMac has CCFL backlight and the Cinema Thunderbolt 27 has LED bklt, the fault is exactly the same and in the same place: backlight connectors on LCD panel. Long story short: just finished spending 2 days on fixing the Cinema 27. 1- octopus cable damaged ------> replaced with new. Backlight still had a mind of its own (working whenever it felt like it) and eventually it stopped working altogether. 2- tried Michael's mod -----> backlight wouldn't still kick in at all, but the image on the lcd flickered 3- undone Michael's mod 4- remembered the iMac LG failure and took Aussie John's advice. Decided to bite the bullet and took the LCD panel apart. 5- re-soldered both backlight connectors on...