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| Thread ID: 66112 | 2006-02-11 09:23:00 | Motherboard Capacitors: Replacable? | bob_doe_nz (92) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 429292 | 2006-02-11 22:57:00 | well here are zoomed up pictures of the capacitors in question WARNING: 2048x1536 resolution www.imagef1.net.nz www.imagef1.net.nz www.imagef1.net.nz If you can suggest suitable replacements from Jaycar I'd be grateful |
bob_doe_nz (92) | ||
| 429293 | 2006-02-11 23:22:00 | Entering "low esr" to the "Search Products" on the Jaycar (www.jaycar.co.nz) site will show what they have. They seem to be mostly 105 degrees C rated, which is good. Your picture with readable values indicates they don't used preferred values. Just go for the nearest. 1500 would be 2200. It might pay to remove one of each value and take them to the shop, so you can be sure the new ones will fit. | Graham L (2) | ||
| 429294 | 2006-02-11 23:31:00 | Righto Ratso! What about voltages? The closest one I saw was 10 volts for the first link |
bob_doe_nz (92) | ||
| 429295 | 2006-02-11 23:42:00 | It will not hurt for the replacement to have a higher voltage rating. As long as it fits. Also be careful unsoldering/resoldering as the motherboard has multiple "layers" of tracks running through it, soldering skill is a recommended requirement. As an aside, most people do not realise that electrolytic capacitors have a lifetime rating of between 1,000 and 5,000 hours (depending on quality) at the rated temprature and voltage. Within that lifetime their rating in microfarads is guaranteed to remain within 20%. Thats not long, but for every 10°C below the maximum rated temperature the expected lifetime will double. It will also increase if the voltage is below the rated voltage (not sure what the multiplier for life is on that). Hence only use the high temperature caps, and keep the case temperature to reasonable levels to get maximum life. Then the PC will be very obsolete before the caps give up. |
godfather (25) | ||
| 429296 | 2006-02-11 23:55:00 | 10V is fine for 6.3V . Jaycar give several pages of low ESR capacitors with one search ... there's a page selector at the bottom right hand corner (and top right hand, too) of each page. ;) Higher voltages are in the later pages, up to 35V. | Graham L (2) | ||
| 429297 | 2006-02-11 23:58:00 | Ok so for my first link above I have chosen CAT. NO. RE6304 from Jaycar. Link 3 above: CAT. NO. RE6306 Link 2 above: Unknown since I cannot figure out what they are rated at. there is another problem of size... RE6304 is 10mm diametre and 16 high. The ones on the mobo are 8mm diametre and ~16mm high. RE6306 is 12.5mm diametre and 20 high. Mobo ones are 10mm wide by 20mm high. Apart from the spacing issues are there any other issues I should know about? Apart from the ones already mentioned. e.g 6 layer PCB when soldering |
bob_doe_nz (92) | ||
| 429298 | 2006-02-12 00:05:00 | Those sizes aren't too bad. At the worst, you might have to leave the leads a bit longer, so the capacitors can lean away from each other a bit. ;) They don't have to be down flush with the board. An intelligent guess might be needed for the crypically marked ones. See if Google knows. :D |
Graham L (2) | ||
| 429299 | 2006-02-12 00:13:00 | Any ideas about that second image? | bob_doe_nz (92) | ||
| 429300 | 2006-02-12 00:47:00 | Aha! Lelon RXA 10v 10mm 3300uf If it is, then thats bad. As I cannot find it on JC's site Hmm it could also be 6.3v 1000uF too... |
bob_doe_nz (92) | ||
| 429301 | 2006-02-12 01:01:00 | 3300 --> 4700 ... more is better. Bigger caps have lower esr. :cool: | Graham L (2) | ||
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