Re: pre-emptive cap replacement
I have more pics here:
[url]http://www.quadesl.com/albums/imac_cap_pics/[/url]
I had a problem locating short caps that would fit into the iMac chassis. I had one cap that was bulging and I called apple and they came out and replaced my power supply and midplane. No fuss no muss. Came right to my house.
So I never did a cap replacement. If you do replace caps yourself be careful of the height of them, particularly the ones near the middle by the stand.
SheldonRe: pre-emptive cap...
stokessd
Member
Last Activity: 03-09-2006, 08:12 PM
Joined: 08-02-2005
Location:
-
Re: pre-emptive cap replacement
Yes, Those are the caps I ordered. They are most certainly through hole.
Thanks for the feedback on the little caps.
Sheldon...Leave a comment:
-
Re: pre-emptive cap replacement
So should I be concerned about the smt lytics in the iMac? I didn't order any of those
SheldonLeave a comment:
-
Re: smell burning
I like how the suzuki has more trunk (or rear hatch space)... The Chevy looks bizarre with the rear wheels that close to the back of the car: really enhances the "roller-skate" look.
I am on my third toyota PU (last one went 250K with zero probs). My fun car is a supercharged miata.
SheldonLeave a comment:
-
Re: pre-emptive cap replacement
I haven't seen any talk of the metal cased surface mount caps being bad as well. Do the folks who make crap through-hole shrink-wrap caps not make the surface mount ones?
SheldonLeave a comment:
-
Re: pre-emptive cap replacement
The 1800 uF FC series caps from digikey are on backorder and while poking around the new PDF catalog, I found a new Panasonic series named "FM" It has longer life and up to 70% lower ESR than the FC series. I'm going to give them a try. Thought you guys might like to check them out.
The downside is that they don't have 1800 uF so I'm going with 2200 uF instead.
SheldonLeave a comment:
-
Re: pre-emptive cap replacement
kc8adu -
Thanks for the info, I appreciate the real-world experience you have. I'm puting in an order to digikey right now.
I figured that you did some vintage refurb as well with the octal tubes sitting on what I think is a hickock tube tester.
SheldonLeave a comment:
-
Re: pre-emptive cap replacement
Thanks for shrinking those pictures. I didn't link them in because they are huge (and I scaled them by 50% already).
I am fairly active in the antique audio electronics hobby and provide plans and circuit boards to replace the aging twist-lock multi-section can caps in vacuum tube audio gear. There is only a very limited selection of modern twist-loc caps out there to replace the dried up old caps, and they typically aren't very good quality caps. I have designed small circuit boards which mount under the chassis, and attach to transformer...Leave a comment:
-
Re: pre-emptive cap replacement
OK, here's what I'm working with:
I've got a bunch of Nichicon HN(M) caps, 25 of them. The good news is that none of them look to be bad. The bad news is that they probably will be. I pulled the lid of the power supply as well, and it's full of a raft of different questionable caps, although I can't tell exactly what each type is, but there are like 5 different brands in there. The big power line ones are Nippon Chemi-con 200v 560 uF ones that appear to be fine.
So I'm now in a bit of a dilemma, I know those caps could...Leave a comment:
-
Re: pre-emptive cap replacement
Those are good points.
I would probably be voiding my warranty if I were to replace the caps, but given the 3-4 week wait times I've been hearing on repairs and having to wait for failure to start the repair process (only to repeat months later), I'm thinking that it may be worth it to get pre-emptive.
I'm going to open the back of the unit tonight and I'll note what caps I need, their manufacturer and values.
I have done re-work on multi-layer circuit boards before (including surface mount), so I'm not...Leave a comment:
-
Re: Sony Vaio systemboard
Just a guess, but I've had to replace inline fuses by the power jack in the past on laptops. The laptop won't charge the battery and won't boot with no wall or battery juice. The inline fust looks like a plastic case tant cap or an encapsulated inductor. It's worth a quick multi-meter probe to rule that out.
SheldonLeave a comment:
-
Re: Apple - iMac G5
I've got one of these and I'm seriously thinking of re-capping it. I'll void my warranty, but I think it may be worth it.
What do you guys think of doing a pre-emptive re-capping?
SheldonLeave a comment:
-
pre-emptive cap replacement
Cap gurus -
I have an iMac G5 and as you may know, that model has had a some problems with bad caps. I'm seriously considering a pre-emptive cap shot-gunning. I have quite a bit of experience with electronics design and repairs, and the total cost would be minimal. Any thoughts?
Also I've had good luck with Panasonic (ala Digikey) capacitors for a lot of my designs. Do you folks have an opinion on them vs the other brands?
Sheldon
No activity results to display
Leave a comment: