Tag: backlight

Panasonic TX-55AXW634 backlight “fix” lifespan data (WHL #84F1)

Someone’s busy, so here’s a lame, lazy follow-up post to the Panasonic backlight “fix” from WHL #84:

It died. Again. Another string of LED backlight bit the dust just four months after the first one. Guess they’re all the same type, age and power-on hours at the same load, so why wouldn’t they fail left, right and center once the first LED has reached its lifespan?

Well, I had fun disabling another string on the Rohm BD9479FV backlight driver. Exactly the same procedure as shown before, and conveniently, someone already routed AGND for the PWM pin to connect to . […]

19th March 2023 19th March 2023 By Bzzz In No Comment

Panasonic TX-55AXW634 backlight (short-term) fix (WHL #84)

TVs are apparently still a thing, and so are defective ones. Here’s what I did to a 55″ Panasonic TX-55AXW634 with the red blinking light of death – likely also applicable to similar units of the “LA58 chassis” generation, e.g. the TX-48AX630B 48″ unit or the even smaller 40″ TX-40AX630E. While this fix isn’t perfect nor permanent (I heard it lasted for four months, when presumably another row of LEDs died), it’s good enough to keep the TV going for a bit longer, so one can order spare parts or decide/save up for a new unit. […]

19th February 2023 19th February 2023 By Bzzz In 1 Comment

BenQ EX3501R 3440×1440 21:9 35″ Curved VA monitor (WHL #33)

Getting sidetracked lately, I know…

Why not post about something that doesn’t come from some Wan Hung Lo factory? I could write a review and put it in some hardware forum, but as there are very few reviews out there as of now, let’s try tweaking visitor count a little ;)

The BenQ EX3501R arrived earlier today (HUGE 100x65x35cm³ box!), and I was waiting for something like that for the past two years already. Manufacturers obviously like to spoil products these days, every new monitor of that kind has something that puts me off big time – no (or very crude) height/tilt adjustment, glare (glossy) coatings, insane stands with integrated electronics meaning no VESA mounts, basically nonexistant FreeSync ranges on “gaming” displays, flickering in FreeSync mode, or something else that somebody probably got a raise for inventing the bullshit. […]

28th November 2017 4th December 2017 By Bzzz In 10 Comments

Lenovo Thinkpad R400 LED Display backlight fix (#P3)

Yes, it’s running in the “projects” category, as “quick and dirty weekend fixes” isn’t available yet :mrgreen:

While I was hosting my brother, he casually asked me when I will fix his display. Umm…what?
Turns out, his Lenovo R400 was showing vertical stripes again. Like these:

(jup, stolen from some Apple customer help page – I didn’t take a photo at the time. I guess the bug is a watermark, isn’t it?)

Update from 23rd of December in 2020: By pure luck, I found this one from the previous issue while shovelling old photos and other data onto my server. […]

23rd July 2017 23rd December 2020 By Bzzz In No Comment