video quality IIe

[ironborn65]

Hi everyone,

I have restored an Apple IIe, I added the pics and documented the restoration in the forum, but they all got lost in the DB failure.
Anyhow, I used a composite to VGA adapter to connect an LCD, I only have the native phosphor monitor and I want to preserve it.
The screen is really of low quality, is it due to the adapter I used or it's something it can not be improved?
(the cable is shielded)






the video:

19/02/2022 | Synology Photos

ironborn65.synology.me

19/02/2022 | Synology Photos

ironborn65.synology.me

Amy recommendation?

thanks

 

[bibilit]

Is your IIe a Pal version or the US NTSC one ?

Above the switch for b&w/Color, my own Pal unit has two pots for correction, have you got a similar setup on yours ?

 

[bibilit]

 

[ironborn65]

Hi mate,
I have a Pal version.
The two pots simply adjust the color tone, there is no effect on the flickering.
I tried the carrier adjustment screw, close to the quartz, and the image improved quite dramatically.
thanks to

From this
View attachment VID_20220220_230151.mp4
too this
View attachment VID_20220220_233034.mp4

Still the are bands and the flickering is not completely gone.

View attachment VID_20220220_232804.mp4
Can it be some defective passive?
Maybe the quartz itself? I do not have an oscilloscope and probably I'll not be able to use it