Rodotron 666 on New astro city monitor

[monouchi]

Mind doing a small write up on how to do the mod? Just a step by step sort of thing, and i'll shove it all up on the wiki for safe keeping

Thanks, its all in the picture.

You need a ON-ON switch that can take some high voltage. (ex : 250VAC)
You need one 1uF 400v Metallized Polyester Capacitor. (Blue in the picture)
The holes on the board is allready there.
The purple cable goes directly to the switch.
The brown cables goes to each capacitor and is what you switch between. (Purple +brown or Purple + other brown.)

Warning : To switch when the power is on is UNTESTED!

[monouchi]

Ok, on to something more challenging.
The famous M2929DC-62 (15-50kHz) chassis has perfect geo without side-compression in 15kHz.
...but at the highest resolution at 48kHz (1024x768) ..the side stretch on both sides is terrible.

Maybe a Cap-switch could change this?
Now, wei-ya dont want to give me the circuit diagram, they call it a company secret.

So, any guess on what Capacitor I should start to play with? (Change to a lower value)

[xmas]

[monouchi]

Looks great xmas.

Have you dared to flip the switch when powered on?

[xmas]

no i havent
but i noticed some missing hori width then playing PGM2. i have a gap of 1cm left and right, even with max adjustment. moonwalker was OK, have to test some others.

[MrMikeLU]

wow guys, finally a fix for that nasty problem is in sight. i bought all kinds of tri/multisyncs just to throw them away (sell for one fifth new) because of that side compression.
so the fix looks to be always in the same area of the circuit in all of the chassis?

[cools]

Same fix for the E3/Samsung tube?

[cools]

Mind doing a small write up on how to do the mod? Just a step by step sort of thing, and i'll shove it all up on the wiki for safe keeping

Now done.

http://wiki.arcadeotaku.com/w/Rodotron_666"

[8bitforlife]

ok been trying to do this mod but the wiki isnt very clear. all the hot glue doesnt show where the wires go. Can someone please explain where the wires go? like on switch which wire goes were and comes from which cap. Maybe pictures would be helpful?

[Josh128]

Got a Wei-ya M3129 and am about to try this same mod. Will see if I can get some pics during the process. One thing I havent seen mentioned is the possibility to use a less than 1uF cap and avoid the switch altogether-- Something like a .85 or so looks like it might give a good balance for both? If you look closely at the 15KHz pics, even after the mod, the side quadrants appear stretched a bit compared to the center.

Also, I havent seen a test that compares the difference between standard, medium, and high res with this mod. Currently, on my set, standard is pretty bad, med is better but still has some side compress, havent checked high yet. But it looks like the set was tuned with 480p as a target with the lower resolutions as an afterthought. So its possible something like a .85/.9 uF would give acceptable results on all resolutions?