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| Suitable RIFA Replacement for International Mac Plus | |
| Posted by: 68kPlus on 2022-08-29 02:19:30 Hi! Just wondering if this capacitor will work okay with my Macintosh Plus (international, from Australia). 
1 Capacitor Rifa PME 271 M X2 0, 1µF 0.1µF 100nF 100n 275V 20.3mm Sh 250V Mp 3701551803139 | eBayFind many great new & used options and get the best deals for 1 Capacitor Rifa PME 271 M X2 0, 1µF 0.1µF 100nF 100n 275V 20.3mm Sh 250V Mp at the best online prices at eBay!
www.ebay.com.au
Thanks! | |
| Posted by: pfuentes69 on 2022-08-29 02:21:40 I'm checking this right now and I was thinking that the big RIFA was 0,47uF for the Int'l version... now you made me doubt | |
| Posted by: 68kPlus on 2022-08-29 02:25:28 Actually you're right - it is 0,47uF. Do you know where I could find one for my Plus? | |
| Posted by: pfuentes69 on 2022-08-29 02:28:51 These are the options I'm checking: From Mouser: And this cheaper one from AliExpress: 
0.16US $ |10pcs X2 Safety Capacitor 10mm ~ 22.5mm 275vac 0.022uf 0.047uf 0.1uf 0.15uf 0.22uf 0.33uf 0.47uf 0.68uf 1uf Polypropylene Film - Capacitors - AliExpressSmarter Shopping, Better Living! Aliexpress.com
aliexpress.com
I think I could go to the AX one... | |
| Posted by: 68kPlus on 2022-08-29 02:36:20 Thanks for the links! From Mouser would cost $36 for two capacitors - a bit much. Do you think the AliExpress caps would work ok? Even if they didn't work well I would have 8 more to spare. Alternatively, I could just remove the caps and not replace them. Is there any long-term disadvantages of not having the RIFAs installed? Thank you for your help. | |
| Posted by: pfuentes69 on 2022-08-29 02:40:48 I think these cheap caps should be good... I will just measure them before installing. I heard the RIFA aren't really needed, as are to filter the power line of interferences created by the computer, so it doesn't affect other appliances in the house... I will just put it because I like this stuff to be as much as possible like it was originally. | |
| Posted by: 68kPlus on 2022-08-29 02:43:24 I don't have any way to test the caps unfortunately. Do you really need to test them (if anyone knows this, please let me know)? Thanks | |
| Posted by: pfuentes69 on 2022-08-29 02:54:23 Well... you can simply trust it's fine. I just like to take the multimeter and verify that are OK by checking the value. Capacitors are cheap components, so I don't think these are a target for fakes... | |
| Posted by: cheesestraws on 2022-08-29 02:54:50 These are safety caps, and their working correctly is really important for 'not giving the user electric shocks' purposes. Their capacitance is not their most important property, by far. I would strongly advise not replacing them with generic unbranded ones. For many components you can get away with cheap stuff, especially in these older chunkier machines, but for your own sake and the sake of the people who get the machines after you, please replace safety caps with proper replacements. Yes, they will be comparatively expensive. That's just life, I'm afraid. | |
| Posted by: 68kPlus on 2022-08-29 02:56:49 That's fair enough. I might go with a full kit from this console repair store in the USA, which is $56 AUD but I get the whole set. Thank you for all your help. | |
| Posted by: pfuentes69 on 2022-08-29 03:12:07 That's reasonable. Although, frankly speaking, the cap sold by Console5 seems to me quite similar 0.47uF 310V Metallized Polyester Film X2 Safety Capacitor NIC Components<p>Replacement for failed RIFA safety caps found in older power supplies.</p>
console5.com
I got from them several kits and all was OK (including a couple of these kits for the Plus PS). They are serious and it's a safe option. BTW... you mention that you need 2... just to say that the PS has three RIFA caps... 2 are 4700pF and one is the 0,47uF | |
| Posted by: Byrd on 2022-08-29 03:20:16 Hello another Aussie - Jaycar sell these, look for X2 metallised polypropylene, 470nF = 0.47uF. If you want the exact Rifa replacements, see element14. EDIT: why does your signature have link to a spam/scam site? 470nF 250VAC Metallised Polypropylene X7 Capacitor | Jaycar ElectronicsVolt Rating: 275/250VACCapacitance Tolerance: +/-10% std +/-5%Operating Temperature: -40°C to 85°CValue 470NLead Spacing 22.5mm...
www.jaycar.com.au
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Posted by: 68kPlus on 2022-08-29 18:25:31EDIT: why does your signature have link to a spam/scam site?I have no idea. I've removed it. The big RIFA in my Plus is a red one (like the replacement), so I don't need to replace it. From Element14: They are 4700pf, which should match the original two. Is this okay? (I've attached an image of one of the RIFAs, C33 - as you can see its not healthy) | |
| Posted by: 68kPlus on 2022-08-29 18:32:44 Another quick question. I'd like to discharge the CRT to replace the capacitors, but I don't own any alligator wires. Will these work? 
10PCS Electrical Alligator Clips Test lead Jumper Wire Crocodile Cable wire HOT | eBay10pcs (Color by Random, 1pc for 1pc, not 1 lot). -Color coded leads allow you to test circuits without crossing wires or causing shorts. -Colour: multi-coloured (red, green, yellow, white and black).
www.ebay.com.au
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| Posted by: 68kPlus on 2022-08-29 20:25:41 Actually this might work better: (It's from element14 too!) | |
| Posted by: grone on 2022-08-29 20:36:30 I used these components to re-cap my international board. The only irksome thing is I used radial capacitors in place of axial, as they aren't easy to find in stock. Note that the 4700pF capacitors are on backorder now. | |
| Posted by: 68kPlus on 2022-08-29 20:45:48 Thanks @grone ! The caps I need (C33 and C36) match the ones you used, so the ones I'm going to get (RIFA branded replacements) should work fine. Mouser's shipping costs are way too high for me so I'll go for element14's. Thank you! | |
| Posted by: grone on 2022-08-30 01:15:23 I got free shipping- probably went over a minimum order amount. The capacitors I received were RIFA branded, and were drop in replacements. If you're near Melbourne I can lend a hand. I've just done all this for the first time myself (discharging a CRT, replacing capacitors, etc.). | |
| Posted by: 68kPlus on 2022-08-30 01:20:19 Shame, I'm in Tasmania. How did you go about discharging the CRT? I am currently discussing this with some others. I've never done it myself, and apparently you can damage your logic board and analogue board doing it. The other discussion: Best cable for discharging Mac Plus CRTHi guys, Just wondering if this cable from element14 (AUS) is suitable for a CRT discharge tool. https://au.element14.com/multicomp-pro/mp770280/test-lead-10a-60v-609-6mm-black/dp/3290132#anchorTechnicalDOCS EDIT: this cable is suitable for 10A, which is what other people have used (Bruce from...
68kmla.org
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| Posted by: cheesestraws on 2022-08-30 01:43:53 RS also has a presence in Australia and might be worth a look. Their UK arm is pretty good, anyway. Discharging - the main thing for 'not destroying anything else' is to make sure you ground it to the right place. | |
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