Author Topic: EEVblog #898 - LCD Contrast Experiments  (Read 12222 times)

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Offline vince53

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Re: EEVblog #898 - LCD Contrast Experiments
« Reply #25 on: July 11, 2016, 02:36:10 pm »
Good work Dave,

I have noticed the contrast issue but have gotten around it by using the backlight all the time.  I'll get around to making the mod.

Thanks,
Vince
 

Offline Porto

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Re: EEVblog #898 - LCD Contrast Experiments
« Reply #26 on: July 11, 2016, 09:34:10 pm »
OLED, the only way to go!  :-+




 

Online Brumby

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Re: EEVblog #898 - LCD Contrast Experiments
« Reply #27 on: July 12, 2016, 02:48:53 am »
Great indoors.  They are 'challenged' in daylight.
 

Offline Fungus

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Re: EEVblog #898 - LCD Contrast Experiments
« Reply #28 on: July 12, 2016, 10:25:19 am »
OLED, the only way to go!  :-+

In a dark room, sure...

(...and if you don't mind changing the batteries every few days)
 

Offline Howardlong

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Re: EEVblog #898 - LCD Contrast Experiments
« Reply #29 on: July 14, 2016, 10:42:39 am »
(...and if you don't mind changing the batteries every few days)

Single biggest reason not to go for OLED!
 

Offline tungsten2k

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Re: EEVblog #898 - LCD Contrast Experiments
« Reply #30 on: January 10, 2017, 08:51:16 pm »
Great DaveCAD demonstration as always ! I remember enjoying this video when posted and am now revisiting due to investigation of similar problem I'm finding on nearly every LCD power control meter (e.g. Peacefair, etc) but having a tough time tracing it down. I want to stay away from led segment display due to light-sensitive environment these will be used in.

For those who don't have the EEVBlog or Bryman meter to review, any pointer on thought process one would use determine how to find the contrast bias angle resistor if Bryman hadn't provided it ?

Thanks for the video !
 

Offline denisber

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Re: EEVblog #898 - LCD Contrast Experiments
« Reply #31 on: April 30, 2019, 07:35:16 pm »
Hi,

I bought a DMM Yokogawa Ty720 and wanted to change the bias resistor too.

How do find the bias resistor?
Do they have some tips?

I haven't a schematic or service manual.


Thanks for any help!
 


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