G05-802 HV cage in a G05-801 Possible??

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Hi;
I inadvertently gave away my last 801 HV cage with the doubler and tried to use the 802 HV cage in it's place, (the monitor frame has holes for both types).
I fired it up and the HV is around 9kV (cannot raise higher) and the rest of the voltages are low as well, the +400 is around +336; the +90 is around +70 etc..
I checked and the cage is getting +26vdc at pin 8, the cage is expecting +40.
My question(s) are, can I mod the HV cage to function correctly on the +25vdc or do I have to swap Powerbricks.
Also, by swapping Powerbricks, if that is even an option, would that not also raise the voltages to the deflection PCB, thereby causing damage??!?!
On the other hand, does anyone have a 801 cage for sale??
Thanks
Jeff
 
From here (Page 9)
http://www.crazykong.com/tech/bw_vector_monitor_faq.pdf

"A G05-801 is not plug compatible with a G05-802 or V2000 monitor. The G05-801 has two plugs (power and signal) while the 802 and V2000 has just one molex plug connector."

Pretty sure the 2 monitors do not go together (Mix and match) in any way whatsoever

All the best finding a HV for the 801
 
Dez;
The 802 HV cage has the same "keys" on the P900 connector as the 801 cage. The only difference that I can make out on the schems is that it is expecting +40vdc at pin 8 where in this application, it is only getting +25vdc, what the 801 cage was getting. If I could supply the required voltage, it "should" work..
Thanks for the well wishes.....
Jeff
 
I know someone with an untested 801 HV cage, PM me if you want me to set something up.
 
No, you cannot use an -802 HV cage in an -801 monitor. 99% certain on this. This assuming you mean plug and play. I'm sure with a little modification, you could get it to work.
 
I might be able to offer some insight here. I received just this configuration the other day for repair. Supposedly it worked fine for well over a year (amount of time in persons possession) before developing a blooming issue and finally dying. The HV diode is bad and I suspect it's replacement will correct. I'll take pics tomorrow but from what I can tell, at least one modification was made to the power brick. Apparently it CAN be done.
 
If you could post pics of the Mods that were done, that would be great!
I have 2 more of the 801 monitors and 2 more of the 802 cages. I would like to be able to put a working one together and as long as the voltages are correct, it should work perfectly.
Thanks again
Jeff
 
Alright, sorry for the delay.
Only one modification to the power board that I can find. There do not appear to be any modifications to the HV or Deflection boards.
I guess I should add a disclaimer:
If you attempt this based on the information I'm providing, do so at your own risk.

Lift the lower lead of L100 (side closest to the big heat sink)
Solder a 1N4007 stripe side to the lead you lifted
Solder a length of wire to the other side
then solder it to the collector of Q100

see pics for details.
ImageUploadedByTapatalk1363047253.673159.jpg
ImageUploadedByTapatalk1363047268.913314.jpg

Hopefully this resurrects a few 801's.
Post your successes/failures in this thread. I'm curious how it turns out.
 
I see what you were describing to me on the phone g3n3r1c. Kind of neat that it powers up
and works. Post pictures of the rest of this Frankenmonitor if possible. Deflection board
and HV cage as a unit. I'm sure this will help get a few monitors going.
 
If you get a chance, could you please take a voltage reading at P101-1 to see what voltage is being fed to the HV cage?
I know that I could do the math and figure the voltage from the BR but it would be dependent on the voltage from the powerbrick and that could vary depending on the model.
Thanks
Jeff
 
Ironically, I've got a 801 I'm working on in an asteroids. The screen jitters... so one of the things I found was that the hv pcb (which is correct for an 801) is getting 40, instead of 25. I'm going to work on that some more and see if I get the voltage how it's supposed to be if my jitters go away.

-25 is dead on. It's got the correct 6057, too.
 
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Alright guys. Here's the deal with mine:

I've got a g05-801, it worked, but had two problems, one was some jittering in the vectors (shakiness) and one was the asteroids would sometimes get dim when they passed through a certain area of the screen.

I figured out that the power board was putting out the correct -25, but also was putting out +40 instead of +25... upon close inspection, the bottlecap that should be a 6057 isn't, it appears to be a 6567 although it's really rusted so I can't read it right.

So, long story short, with the 6057 in, it puts out 25 volts. With the 6567 (I THINK) in, it puts out 40 volts.

Voila.

Somebody should be able to pull up the specs and find out if that's the right number, or if not, what the correct number is. With that said, though, it appears that the higher voltage was screwing up my z circuit. (brightness) because the asteroids were changing intensity, but stopped when I put the correct bottlecap in.
 
Actually according to the schems, ZD100 and ZD101 control the voltage.
For +/-35v use 1N5365
For +/-25v use 1N5361

I am wondering what the voltage would be directly from the BR..............
 
That's what I'm saying though, mine they just swapped in the wrong q100 and it made it 40volts. If I put the correct 6057 back in, it's 25 volts again. both the zeners are the correct 1n5361's.
 
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