145B LCD recapped with tantalums

[PB145B]

Never seen one of these done in all-tantalums before, but it seems to work great! The contrast drifting has almost completely vanished. Once I recap the inverter, it should be perfect. I also noticed that the overall image quality is better.

 

[AwkwardPotato]

Nice! That screen looks surprisingly sharp for a passive-matrix display.

 

[PB145B]

Nice! That screen looks surprisingly sharp for a passive-matrix display.

Thanks! Yes, it does actually look really good. 

 

[techknight]

Yea itll improve the image quality by an order of magnitude. Main reason is the passive matrix LCD requires a high driving voltage. around 40V or so for the sinusoidal signal to keep the crystals from developing a memory effect. If the caps are bad, it distorts that voltage and signal, seriously compromising the image quality. 

 

[PB145B]

Yea itll improve the image quality by an order of magnitude. Main reason is the passive matrix LCD requires a high driving voltage. around 40V or so for the sinusoidal signal to keep the crystals from developing a memory effect. If the caps are bad, it distorts that voltage and signal, seriously compromising the image quality. 

Very interesting! I knew it improved the image quality by quite a bit, but didn’t really know exactly why. Now I do!