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Forum: Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices

12-06-2021, 11:34 AM

Replies: 82

Pantum P2502W Toner Reset Chip help

Views: 68,304

Posted By timschuerewegen

Re: Pantum P2502W Toner Reset Chip help

I found a simple way to reset the toner chip page counter via the USB cable. No need to open the printer or buy a chip programmer.

The only drawback is that you still need to be able to print a...

Forum: Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices

12-05-2021, 05:33 PM

Replies: 82

Pantum P2502W Toner Reset Chip help

Views: 68,304

Posted By timschuerewegen

Re: Pantum P2502W Toner Reset Chip help

I successfully modified the page count on my toner chip, but ...

The newer firmware versions keep track of up to 5 toner chip page counts in the nvram area on the SPI flash chip. When the firmware...

Forum: Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices

12-04-2021, 02:54 AM

Replies: 82

Pantum P2502W Toner Reset Chip help

Views: 68,304

Posted By timschuerewegen

Re: Pantum P2502W Toner Reset Chip help

If your printer has an older firmware then it might be possible to reset the toner chip counters by sending a special command to the printer. I can probably help you with that. My P2500W has a...

Forum: Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices

12-03-2021, 03:41 PM

Replies: 82

Pantum P2502W Toner Reset Chip help

Views: 68,304

Posted By timschuerewegen

Re: Pantum P2502W Toner Reset Chip help

Success :)

I reverse engineered the printer/chip protocol (including encryption), the meaning of the toner chip data (including encryption and checksums) and can communicate directly with the chip...

Forum: Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices

12-01-2021, 02:38 PM

Replies: 82

Pantum P2502W Toner Reset Chip help

Views: 68,304

Posted By timschuerewegen

Re: Pantum P2502W Toner Reset Chip help

The firmware on my new P2500W printer was encrypted, and the key to decode it was stored in 88PA6110 efuses, so I had to modify the bootloader to dump the efuse values via UART :)
...

Forum: Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices

11-27-2021, 05:04 PM

Replies: 82

Pantum P2502W Toner Reset Chip help

Views: 68,304

Posted By timschuerewegen

Re: Pantum P2502W Toner Reset Chip help

I just ordered a P2500W. The toner chip communication is encrypted, according to the disassembled printer firmware, but I have all the necessary information (I think) to read/write the toner chip...

Forum: Troubleshooting TVs and Video Sources

07-10-2020, 10:58 AM

Replies: 8

LG 47LW650S - no picture, no sound, no backlight, power ok?

Views: 1,139

Posted By timschuerewegen

Re: LG 47LW650S - no picture, no sound, no backlight, power ok?

The TV works again :)

- added flux around the edges of the SoC and tried to get it under the chip (not sure if this was necessary or had any effect)
- used kapton tape to protect the nearby...

Forum: Troubleshooting TVs and Video Sources

07-07-2020, 11:45 PM

Replies: 8

LG 47LW650S - no picture, no sound, no backlight, power ok?

Views: 1,139

Posted By timschuerewegen

Re: LG 47LW650S - no picture, no sound, no backlight, power ok?

That was the first thing I tried, but still no picture/sound/backlight. The fuses on the power board are good, the voltages are good and visually everything looks good. It probably needs a SoC...

Forum: Troubleshooting TVs and Video Sources

07-07-2020, 03:43 PM

Replies: 8

LG 47LW650S - no picture, no sound, no backlight, power ok?

Views: 1,139

Posted By timschuerewegen

LG 47LW650S - no picture, no sound, no backlight, power ok?

I had paused my media player and when I came back after 10-20 minutes the TV screen was black but the power LED was white, so the TV was still on. At first I thought it was a problem with my media...

Forum: Announcements & Related News

07-07-2020, 02:56 PM

Replies: 29,786

Sticky: New Members - please post your introductions here

Views: 2,768,806

Posted By timschuerewegen

Re: New Members - please post your introductions here

Hi. I'm trying to fix my broken 3D TV because they don't make them anymore.

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