Hello,
I'm retro computer collector and I got an ultra rare, 30 years old computer to restore and repair. It's Ivel Z3, an Apple2 compatible from ex. Yugoslavia. There are maybe 100-200 units ever produced mostly for army, most of them destroyed during the war. This one is one of two units we know still in existence, S/N 23.
Now to the point,
On the video board for CRT, I noticed some possibly leaky caps. I don't want to switch the unit ON before I'm sure everything is OK. The caps look quite different than what I use today, and I'm even not sure what type of caps to use for replacement. I tried to check them with ESR4.0s in circuit, but on some caps I get some nonsense reading. Maybe I should measure them out of circuit...
What do you think, should I replace all these caps? Take a look at the pics, there is some visible leak or corrosion on two small 10MF/30V caps (C1 and C13). What capacitor type is that?? These big blue electrolytes are OK, but I worry about all these small axials...
When restoring retro stuff, I like authenticity even on component level, but in this case I prefer funcionality ;-)
Any help is more than welcome!
Thanks and Cheers!
Suad
I'm retro computer collector and I got an ultra rare, 30 years old computer to restore and repair. It's Ivel Z3, an Apple2 compatible from ex. Yugoslavia. There are maybe 100-200 units ever produced mostly for army, most of them destroyed during the war. This one is one of two units we know still in existence, S/N 23.
Now to the point,
On the video board for CRT, I noticed some possibly leaky caps. I don't want to switch the unit ON before I'm sure everything is OK. The caps look quite different than what I use today, and I'm even not sure what type of caps to use for replacement. I tried to check them with ESR4.0s in circuit, but on some caps I get some nonsense reading. Maybe I should measure them out of circuit...
What do you think, should I replace all these caps? Take a look at the pics, there is some visible leak or corrosion on two small 10MF/30V caps (C1 and C13). What capacitor type is that?? These big blue electrolytes are OK, but I worry about all these small axials...
When restoring retro stuff, I like authenticity even on component level, but in this case I prefer funcionality ;-)
Any help is more than welcome!
Thanks and Cheers!
Suad
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