Nintendo Space Fever Vertical issues

ArcadeGeek

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I have been working on restoring an old space fever and the monitor is giving me fits. I have done replaced all polar caps including the b+ c606. I have replaced the b+ pot and ic601. B+ is a clean 108v. I have tested the both vertical transistors, diodes and vsync and vhold pots out of circuit and they tested good. Reflowed all the wires from the pcb to the adjustment board. Still getting the following display issue with or without the pcb connected. Any suggestions welcome. There are about 3 or 4 non polar caps that I am thinking I may need to source just to rule them out but hoping that someone here has seen something similar.
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That certainly looks like some collapse.

I've rebuilt a few of these (one currently posted FS), and I always replace the bipolar caps as a matter of practice. There are (4) of them on this chassis, so the odds that one is in the circuit in question seems high.

WANTED!!! : DECO Cassette System Cages/PCB's - Amplifone M48AAW00X Tubes - Robotron Cabaret - NeoSaveMasta - PuLiRuLa PCB - Sailor Moon PCB
 
That was my thinking as well. I will source those out and give it a shot. This 14" Sanyo has been an interesting animal to find a knowledge base for. It's close to the 20 ezz but not exactly.
 
That certainly looks like some collapse.

I've rebuilt a few of these (one currently posted FS), and I always replace the bipolar caps as a matter of practice. There are (4) of them on this chassis, so the odds that one is in the circuit in question seems high.

WANTED!!! : DECO Cassette System Cages/PCB's - Amplifone M48AAW00X Tubes - Robotron Cabaret - NeoSaveMasta - PuLiRuLa PCB - Sailor Moon PCB



I have an order into Digi-Key for 3 of the bi-polars.

One I am having a hard time finding a supplier.

C408 is a 1uf 160v. I am having a hard time finding this one. Do you have recommendations on a supplier who stocks this one?
 
Thanks Ballytablewiz! I searched using the specs and didn't find that. Figures. Here is the list I found.

C408 1 uf 160v
C351. 10 uf 25v
C206. 4.7. 25v
C48x. 220 uf. 25v
 
Replaced the bi-polar caps and unfortunately the issue still remains. Since I have now replaced all caps on the board I am going to rule out a cap. I did poll and test the transistors in the vertical section but I'm going to go ahead and replace them. I welcome any other suggestions/advise. Thanks
 
Vertical issues fixed but now have a horizontal issue. I found a ceramic cap at c467 was broken or cut off. Just he legs showing so I ordered and replace but the same issue remains. Any ideas. I'm so close....
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with all the work to take the chassis out why did you not change all the electrolytic caps on the chassis. which 14inch model is it? AZZ or AZW?
 
To clarify further. Full cap kit done, replace 902,903 transistors and fixed vertical collapse. Last issue is not I cannot adjust out the horizontal position. It's shifted. Reading the maintenance manual for Space Fever sounds like there is a position wire that when cut will shift the screen left. I am pulling the monitor to check the location of this wire.
 
I did change all the caps. I'm not sure on the azz or azw. Is there a way to tell?

if its a 14inch and not a 13inch it would have the letters stamped into the metal frame on the side by the flyback. BTW: the 14inch sanyo monitors have a B+ of 105vdc not 108vdc like the sanyo 20ez
 
Still unable to locate the issue. After reviewing the Space Fever maintenance manual they mention that a wire jumper is needed at J12 to have the screen horizontal center. There was no wire jumper installed. I installed this but still zero difference.

I then remeasured the b+. 105v

I am thinking there must be a bad trace somewhere in the Horizontal circuit. I am going to pull the board again and run some continuity tests on the circuit.

Getting to really learn this monitor the hard way :)
 
Vertical issues fixed but now have a horizontal issue. I found a ceramic cap at c467 was broken or cut off. Just he legs showing so I ordered and replace but the same issue remains. Any ideas. I'm so close....
743e735dfc28957c7f9f584c93b54c4f.jpg

What ended up fixing your vertical issues? Replacing the transistors?

EDIT: Ugh, that's what I get for not reading page 2. You confirmed this in the top post of this page! My bad.
 
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