22-01-2016, 08:43 PM
That monitor is certainly worth saving. If it goes on for another 13 years I'll be very happy. At a rough guess it's probably been on for around 60,000 hours so far. Even allowing for the usual longevity of electrolytics when underrun and kept reasonably cool that's not bad.
I know about the overreading problem with DC based capacitance meters. Like you, I don't know how that big cap is measuring so well when it has clearly had it.
The 1000uF will get replaced by a 2200uF. I can't imagine this will cause any problems. I can see that that they saved a few coppers, even on a high priced product, by using a mixture of 10V and 16V for the 2200uF parts. They must have been buying in very large quantities to make that worthwhile. Looking at the other PCBs in the monitor I suspect the PSU was bought in. Possibly a standard product, slightly customised for LaCie.
When I've been ordering from RS in the last year or two I've kept on forgetting to include a little 20mm diameter speaker to replace the duff one in one of my cordless phone handsets. The handset is fine but it doesn't ring and can't be used on loudspeaking. Finally remembered! A mere £1.34.
I know about the overreading problem with DC based capacitance meters. Like you, I don't know how that big cap is measuring so well when it has clearly had it.
The 1000uF will get replaced by a 2200uF. I can't imagine this will cause any problems. I can see that that they saved a few coppers, even on a high priced product, by using a mixture of 10V and 16V for the 2200uF parts. They must have been buying in very large quantities to make that worthwhile. Looking at the other PCBs in the monitor I suspect the PSU was bought in. Possibly a standard product, slightly customised for LaCie.
When I've been ordering from RS in the last year or two I've kept on forgetting to include a little 20mm diameter speaker to replace the duff one in one of my cordless phone handsets. The handset is fine but it doesn't ring and can't be used on loudspeaking. Finally remembered! A mere £1.34.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
