rrrrr... I think I just blew my monitor

[Lilwolf]

I have one of those 27" EYGO VGA monitors that went around about 5 years ago...  Its worked great for most things...

I was adjusting some settings from the little board thats on a ribbon wire for setting most of the normal settings (vhold, sizes, brightness ect).

Well, I !@# dropped it and it fell a foot.... 

And the whole monitor went from a nice screen to a horizontal line... I can tell everything is doing fine other then that...

Then I was playing with it hoping it was just something loose... and I was flicking things... and all went black...

any clue?  I can see things change on the horizontal line!  I'm so !@# pissed because I can't spend any money right now and I just got my arcade machine up (after a 1/2 year -> year down time because the computer was !@#)...

Thanks for any and all help

[Kevin Mullins]

So all you dropped was the remote board?

[Lilwolf]

yeah, not sure if I blew something elsewhere... but most likely I broke the vertical size pot...  its probably not as bad as I initially thought...

not that I know how to detect it...

[Ken Layton]

The trim pots on remote adjustment boards are delicate. Likely you damaged either the vertical size or vertical position pot. Bob Roberts sells these and has pictures of the various types and values he sells on his parts site.

[Lilwolf]

Great.... I'm feeling a lot better about the monitors ability to come back to life now...

It might be a good time to install cap kit while I'm at it... (had it for a year but never got around to getting the solder gun out)

Thanks

[Lilwolf]

Ok, one more question.  How can I tell what type ohm pot I need?

They are Type D's, but when I look at the ones that are fine, they are 5K, 10k and 20k... And 3 are bad (always have a connection).  But I don't see any markings on the pots and nothing on the board.(other the VR101, VR102 and VR107 for the ones that are bad... but those seem to only show what they are).

I searched around but couldn't find any schematics...  (btw, its a 27" eygo monitor... I believe its a 428 based on what bob roberts).

If I take them off, will the pots show the range on the bottom?  Should I just buy a few of each and try them all?

Thanks!

[Level42]

Ever heared about Ohms meters ? 

De-solder them from the PCB, turn the pot fully one way (doesn't matter which way) and then try to measure between all the pins. The highest value is the correct value of that pot.

[Lilwolf]

I have an ohm meter... and tested them all...

trouble 3 are dead (always have full connection)... So I can't get a reading...

Out of all the ones which aren't dead, I get 20k, 10k and a 2k....  All of them look exactly the same... 

So I don't know what the other 3 are... and I could just buy 3 of each and mix/match

Anyone know where I can get a schematic for these?  (Eygo 27" monitor)