Does anyone have a schematic for these CyberPower AVR UPS's? Thank you... Steve_fromKS
-
UPS turned off one night and it seemed that the 3 year old batteries gave out.
Replaced with a new pair, but the UPS software claimed the battery voltage was only 18 volts and needed to charge. After 24 hours, the UPS claimed only 60% charge and 20 volts (although FWIW, my meter sees 27v).
...then I found various Cyberpower threads here with some guidance on what to check.
C1 (22uF) tested at 2, so I replaced that.
Put it all back together and didn't see a change on the reported battery voltage. Although, I did run the quick battery diagnostic... -
Hi it looks like everything works don't know where to test except the 390v in the 2 capacitor in the hot side of the power supply and the weird 180v in the diodes in the cold side that should be discharged it is writin on the circuit no more you can read what is written on the circuit quite srrange color mixiing yellow and white
anyhow i couldn't t read anything else
the backlight is on strong and the screen does not get dark or very dark but no pictures
the mainborad feels a bit hott on the black part i test it to 52 degree's against 34 to 40 on the rest of it
... -
The 55" LG has been in the basement for a few months without being used. Turned it on yesterday, set came on as it should and showed a complete screen for about 5 seconds (was on a broadcast channel but no antenna was connected), then the screen went mostly dark with about 1/3 of the screen on the right lighting up with brighter lines in that lit part (sorry, no pictures of that). Power LED was cycling too, preventing the TV from fully powering up.
Pulled the back off, all boards looked OK. Pulled the LED connector, turned the set on to see if it would power up but I don't belive it... -
Hi,
Trying to fix a broken w8400 canon printer with a BC-1350 printhead.
I believe the BC-1300, BC-1400, BC-1450, BC-1350 are all the same printhead with the difference being the data in the EEprom.
I have a dump of a BC-1350 printhead but not sure if it is correct, Is there anyone on this forum that has any information that could help me out?
00 3E 06 65 9C 04 00 0F 56 62 3C 10 2F 2E 2D 2D 2E 2E 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 11 11 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00... -
Hey, I find it very absurd that the SVOD4 costs so much and has zero documentation. I had no other choice than to buy it to unlock ECs, if there was any documentation or firmware avalible I could've made it or something simmilar. Anyways here are some of the most important parts:
STM32H723VGT6 MCU - It's a microcontroller by STMicroelectronics and its the whole brain of the SVOD4. It has flash memory for the firmware which can be updated by the SVOD4 program. Its also powered by the AMS117 which converts 5v into 3.3V. 7€ on AliExpress.
GW1N-UV9UG169C6/I5 FPGA - Its a...07-04-2025, 12:23 PM
Comment