Nintendo Space Firebird - HELP!

[simplesi]

Ok... I've looked at the main board and it would seem I have the Sanyo 14-AZZ/14-EZW. It's similar to the EZ20.

Here's a copy of the main board: https://www.dropbox.com/s/16us2q7a9mtv0c1/20130319_214416.jpg

Really appreciate all your help. I've double cheked that the jumper is on the correct way (no switch on this board). Looks like the next thing is to replace TR402 and TR403. Do you know if the Cap Kit you recommend is good for this monitor?

Thanks.

Si

[Etienne MacGyver]

did some googling:

http://www.juniorsrevenge.com/sanyo14azzcaplist.txt  :


============
Sanyo 14-AZZ
============

C161 - 220uf 16V
C162 - 4.7uf 25v (Bipolar)
C166 - 1uf 50v
C202 - 220uf 16v
C205 - 100uf 25v
C206 - 4.7uf 25v (Bipolar)
C207 - 1uf 50v
C208 - 47uf 16v
C211 - 100uf 16v
C406 - 4.7uf 160v
C408 - 4.7uf 25v (Bipolar)
C410 - 47uf 160v
C453 - 1uf 50v
C455 - 1uf 50v
C457 - 100uf 25v
C460 - 1uf 50v
C462 - 100uf 160V
C475 - 1uf 160v
C610 - 1uf 160v
C471 - 10uf 160v
C474 - 330uf 25V
C479 - 1uf 16v
C484 - 330uf 25V (Bipolar)
C609 - 470uf 10V
C606 - 470uf 160V (B+ Filter Cap)

Compiled by Edward Lutz
Provided by www.juniorsrevenge.com

from some other source, i found a nice PDF..

Sanyo14in.pdf

I have put it on my webspace as direct linking was not working 

[simplesi]

Thanks Etienne. I appreciate your help. Do anyone know where I can order this kit, or is it best to just order the parts online?

Si

[level42]

Bob Roberts has a kit:

Sanyo 14" color- Atari   $5.00

Better double check it's a complete kit, that all the parts are correct and if it has all those bipolar caps included....those are hard to find....

[simplesi]

Thanks. I saw that, but you mentioned before that there are better "deluxe" kits. Will double check.

Many thanks,


Si

[level42]

Yes but that source has only the most common monitor kits...

I still think the problem with your monitor is not the caps but faulty transistors or bad solderings....better check all that first...

[simplesi]

Ok... will do. I need to discharge the monitor first. Been doing some reading up. Thanks again.

[Etienne MacGyver]

The bipolar caps are for the audio part AFAIR

[simplesi]

Been in touch with Bob Roberts. He can help me out with the cap kit, so that's ok. I just need to discharge my monitor.

I'll be making my own probe (long flat-head screw-driver, thick earthing wire, croc-clip, etc). When earthing, do you attach the croc-clip to the chassis of the monitor or somewhere else? Any advice?

Thanks,


Si

[Etienne MacGyver]

http://www.youtube.com/watch?v=mV9Td8vAb0Y

[level42]

Better make sure to NOT touch the metal of the screwdriver with that method.... 

[Etienne MacGyver]

Dont touch any metal parts during the discharge procedure, thats ofcourse a no-brainer.

just connect the cable to the frame, and stick that srewdriver under the anode cap and make sure you touch the metal under the cup with the screwdriver. ofcourse not with your finger 

 

[simplesi]

Hello chaps. Been a while... too much work at the moment and not enough time on my cabs.

Thanks for all your advice. I've managed to get a picture now. See the before and after pics.

I'm happy... this is my first major electronics fix for me. Woohoo! I fixed a collapse! I know this is is a minor thing. Anyway, what this has shown is there is a lot of bleed and I cannot centre the picture. There is no white either.  I think there is a graphic problem where the stars show on the screen at start up then move to either side of the display when playing. Sounds work.

I'm thinking a cap kit for the monitor to fix the bleed (ordered from Bob Roberts). Is it a voltage problem?

Any advice would be appreciated.

Thanks.

[Etienne MacGyver]

Bleeding could be caused by overdriving the guns..

try to fiddle around with the pots..

http://www.youtube.com/watch?v=MUL5TiUYAss

[simplesi]

Will do. Thanks Etienne.