Replacing some caps

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hey folks, this is my first recapping, and so far it's all ok, i replaced almost every cap with nichicon and elna caps, but i have a few problems identifying some caps: first of all here they are:

(the blue ones)

An externally hosted image should be here but it was not working when we last tested it.


(red onees)

An externally hosted image should be here but it was not working when we last tested it.


(red again)

An externally hosted image should be here but it was not working when we last tested it.


are these film caps or am i mistaken? Also would anyone recommend me some replacements for these and what kind of specs should i look at - i mean i dealt only with electrolytic ones.

Also i have some doubts about replacing the two black caps above, since they are soldered a bid different here:

An externally hosted image should be here but it was not working when we last tested it.


i can see that one of the connectors is soldered to these cables, if i replace these caps, i should resolder them like i it was before? I mean - is that solder done on purpose? Thanks :)
 
The red are Wima MKP (popypropylene metallized) 1uF/250V so not bad, the blues are surely also film but can't read the type so I'm not sure, can you post a photo where can read the value & type, about blacks I'm not sure are caps, could you post another photo showing all component & if it's something marked better?
 
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Ex-Moderator
Joined 2002
Wima MKP10 is a fine polypropylene film cap. I would not replace them. I think the blue ones are either RIFA or Epcos caps but they could be MKT or MKP.

If they're MKT you could replace them if they are in a critical position. Otherwise I would leave them where they are.

Good luck with desoldering the cables as it won't be very easy with a standard soldering tool. From the pic it looks like lead-free solder. Remove that with desoldering braid and use tin lead solder when resoldering parts. It will be a mechanical better connection.

Controversial: make sure the film caps are orientated the same way when replacing them. So not one in reverse. Despite that they are non polar this is ! The outer foil is marked with the stripe with Wima caps. If that one is connected to the lowest potential that cap is more or less "shielded".
 
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Thank you guys, i managed to replace those 2 big caps ;) took me about the same amount that it took to replace around 25 regular caps hehe ;) but i managed, so far everything works great, since this is my first real recapping, i was afraid to turn the damn thing on thinking it could explode or something, but i was listening for about 3-4 hours for a few days, and no problems, and i fixed my channel dissapearance problems i had before :)
 
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