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- เผยแพร่เมื่อ 26 ส.ค. 2024
- A last-ditch effort to save this tool from being discarded - a success! Careful application of hot air to the ribbon cable of the LCD seems to mend the ever-common issue with horizontal lines appearing all over the screen.
The cause of the issue seems to be warpage of the LCD PCB over time, causing the adhesive of the flat-flex cable to fail.
Help me survive: / ffcossag
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"I am agitating this board quite fiercely" new favorite quote.
Indeed.
Yup, thats how to fix this problem, possibly temporarily, but fix it at least. I happen to have experience with this as well, but another device and a smaller display. The nasty thing about the problem with the display you're showing is just that the cable is folded over. In my case I used just a soldering iron on a low setting (125C, if I remember correct) to push down on the cable and fix it that way. Very well done! :)
When I see people do re-flows I notice some aren't successful, but the guys that soak it in flux first have a much higher success rate. I think when joints crack they oxidize so that they don't always remelt together, but when you use flux the joints clean and have a much better chance of remelting.
Yep - however these LCD bonds aren't usually solder, but rather some form of conductive hot-melt glue.
I was wondering how they get it to stick to glass - thought it was some kind of glue -. Those Fluke screens seem to be a big problem because I saw EEVblog having a go at one as well. Good work on the vid.
Excellent and informative video. With great outcome.
Good show, nicely done. Them LCD's seem to fade either to black or light in the sun, so it looks like the effects are gone once it returns to room temps. I'll have to keep this in repair technique mind
Craig Nehring Yeah, they have a limited operating temperature range for some reason I don't entirely understand due to LCD physics.
Muito obrigado, Parabéns. Excelente aula.
Well done, its usable again :-D.
Im supprised that fluke didnt apply a clamp of any kind, or just use a longer ribbon so there is less stress on the connections.
I think i would try inserting a rubber rod into the bend space, so when the screws are tightened the display is pushed down slightly by the plastic fasia.
Still i think it would be short term.
Amigo tienes una pantalla del fluke 43b para la venta la mia le salio un ongo o una mancha y no deja ver nada
Amigo tienes una pantalla de repuesto para rl fluke 43b
Common issue with a lot of LCD displays like this that end up in the bin because of excess lines, and repairing the ribbons is definitely only temporary sadly... :\
And LCDs do "fade out" when heated above a certain temperature, but usually doesn't harm them unless it's excessively hot...
Buenas amigo saludes desde colombia usted tendria la pantalla del fluke 43b la mia le salio una mancha y no se ve nada
A good reason to buy a heating station ... what model do you have?
The cheapest one.
fluke 435 service diagram ?
where can found this ribbon cable for Fluke scopemeter 190?
Hi there
I have a a fluke 123 industrial scope meter
It turns on but have a blank screen with no lines. What do you think is wrong with it?
Same problem. I have one which was on the shelf for a long long time. I changed and charged the batt bur the screen not light. Only a anemic beep.
Nice fix tho it probably won't last more then a few weeks in a hot car.
Sadly it didn't even need a hot car... Now it has about 6-7 lines again... :-/