Re: HP8657B Mains Filter Disaster
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Hi, that's, unfortunately, normal. They go up in smoke after some age. I believe (if you are brave) you can use the Equipment afterwards, normally they fail OC (at least mine have so far), but I would not recommend. The FN370-2, you can get at Mouser, Farnell and so on, something about 25€ (here in Germany). Confirm with the datasheet, there are quite some variances of the Filter. Be sure to remove the brown, smelly stuff, that came out of the filter. Once fully dry, it is difficult to remove. I have started to replace this type of Filter on a Unit as soon as I get it. Saves me the ugly smell in my Lab and the brown stuff in the unit. Best Regards, Martin Am Di., 2. Apr. 2019 um 17:12?Uhr schrieb NigelP <nigel-pritchard@...>: Had a disaster with the mains socket/filter/voltage selector on my 8657B yesterday. Wasn't even switched on and smoke suddenly poured out of the back; I initially assumed it was an electrolytic but quickly discovered that the filter components in the power socket complex had gone S/C L-N and taken out a 5A fuse in the UK mains plug (thank goodness we have fuses in the plugs in the UK). The unit was off but connected to the live bench system and of course the filter is directly connected 100% of the time that power is applied to the end of the mains lead. |
Martin Rickes