VCOM setup mismatched by KOBO

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Kobo Libra Colour

2024 年 4 月发布的 Rakuten Kobo Libra Color 电子书的维修和拆卸信息。型号为 N428。

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V M @veteene

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发帖于: 2024年5月15日

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VCOM setup mismatched by KOBO

I saw some posts on forums commenting that some users opened their Kobo and noticed that the VCOM indicated on the board was different from the VCOM configured in the system. My question is whether I should open my Kobo to check if my model also has a mismatched configuration. It seems that several devices are coming with them misconfigured, and here on iFixit, there is the following information: If the VCOM numbers stay mismatched for long periods of time, this may result in permanent damage to the E-ink display.

So, should I open it to check or ignore it, even though there is a possibility that my Kobo is misconfigured? Any suggestions from Kobo or iFixit regarding this?

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Carsten Frauenheim @carsten 声誉积分: 117.1千 275 111 449 · Answer 1 · 2024-05-30T11:29:54-07:00

Carsten Frauenheim @carsten

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发帖于: 2024年5月30日

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V M,

Some users are seeing small mismatches in VCOM values (e.g. -1362 mV in software compared to -1.37 printed on the display cable). The software is displaying a rounded value, and sometimes latching to a predetermined "expected" result. So, even if it looks like they're off by a little, they actually do match—nothing to worry about!

All Kobo displays come pre-calibrated—so, even if it might seem like the software and printed VCOM numbers don't match to the exact digit, it's still working as designed under the hood. Additionally, even if the displays were off by a few mV, that small of a mismatch isn't stark enough to cause display damage.

Hope this helps!

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Kobo Libra Colour

VCOM setup mismatched by KOBO

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