AppleColor composite monitor IIe discoloration on the corners

Discussion about old PC hardware.

AppleColor composite monitor IIe discoloration on the corners

Postby Windows9566 » 2019-1-14 @ 04:41

Image

I just got a AppleColor composite monitor IIe for my Apple IIe, it works but has discoloration on the upper left corner (yellow splotch on the upper left) and lower right corner (blue splotch on lower right)
any way to fix it? or is it there forever.
DOS PC - ASUS VX97, Pentium 133 P54C, 32 MB RAM, S3 Trio 64V+ 2MB, 40gb HDD, Win95 OSR2.1
Win 98 PC - ASUS P2B, P3 500 MHz Katmai, 256 MB RAM, Geforce2 MX 400 64MB, 3dfx Voodoo 2 SLI, 40GB Hard Drive, Win98 SE
User avatar
Windows9566
Member
 
Posts: 182
Joined: 2015-4-30 @ 14:55

Re: AppleColor composite monitor IIe discoloration on the corners

Postby Tiido » 2019-1-14 @ 09:54

Degaussing operation after power on (that thunk sound) should fix such things. This is caused by magnetization of the mask in the screen or nearby magnetic field (i.e from non shielded speakers). Sometimes you need to power on the monitor several times (with few minute breaks) to fix that. Also changing positioning of the monitor while it is running can cause this, in which case another degauss operation is likely needed though effects of that should be far more subtle.
User avatar
Tiido
Oldbie
 
Posts: 862
Joined: 2018-1-14 @ 04:40
Location: Estonia

Re: AppleColor composite monitor IIe discoloration on the corners

Postby sf78 » 2019-1-14 @ 12:49

You could also take a risk and use a strong magnet on the case and swipe back from the front side of the case (where the discoloration appears) to the rear where the tube ends. I have fixed a couple of TV's with this method, but it might require a few tries and you might experience stronger discoloring at first. Also, I don't take any responsibility if you make it worse, but if it's already ruined then what's the harm?
sf78
Oldbie
 
Posts: 580
Joined: 2014-10-16 @ 15:05
Location: Finland


Return to General Old Hardware

Who is online

Users browsing this forum: SETBLASTER, TheMLGladiator and 9 guests