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Would a properly sized fuse prevent a fire from happening if you fired up a hotplate, and placed it in contact with a curtain? This is a common misconception about fuses and fire protection. They are

So don’t rush out replacing all your 250 V nominal equipment (which will be almost all of your equipment), but do rush out to get rid of the crazing 1980s' RIFA capacitors (inside a golden clear

There is a worse smell fortunately rarely encountered any more and that is of a failed Selenium Bridge Rectifier. ------------------------------------------------------------------------ Oh good grief

Hi Should add, that in the USA if on 115VAC mains the main reservoir electrolytic could well be the reason for the smell. With switch mode supplies, which the 8920B will be, on 230VAC it is normally

Hi I have never worked on a HP8920B power supply, but I have worked on a HP8920A one. The A power supply did have mains input filtering and deteriorating capacitors could well be the reason for the

Is this same part used in the HP8920B? I ask because my otherwise fine unit outgasses a mild chemical smell when turned on. I am in the US.

Is this same part used in the HP8920B? I ask because my otherwise fine unit outgasses a mild chemical smell when turned on

It is pot luck but you can be careful. Look at the vendor and see if they sell other stuff with guarantees as tested. Then if this item says untested you can be suspicious. If the vendor sells

When looking to purchase something like a 85046a at auction, how concerned should I be about a unit's cosmetic condition, assuming it's being sold as-is?? How easy is it to damage the RF connectors,

Care to identify where? Sure, 230 V ± 10 % = 207 V..253 V. The UK tends to be at the upper end (historically “240 V”). But when items such as line filters are qualified for a working voltage,

Yes, please! Grü?e, Carsten

I modified the file in the e7495 Full 625 Upgrade I now have a PCMCIA Card that both upgrades the e7495 and patches the time/freq problem I have a zipped file that includes everything you need to make

Thank goodness it has been almost 60 years since I smelled that aroma. Sent from K5JLR

Hi This last email contradicts itself, also it is not unusual in the UK for the mains voltage to be or exceed 250VAC.? George G6HIG

That has nothing to do with the problem here, which is not that the rating was marginal (it wasn’t), but that the capacitors in the filter were failing over a long time of use. The outer plastic

Hi Nigel As you are in the UK and have access to Toolstation a very useful solvent for many purposes is their PVCu Solvent Cleaner. ?Its great for removing all sorts of unwanted residues and is does

Thanks for all the comments. I've actually ordered a new one from Digikey UK; bizarrely it's coming from the USA even though it's made in Switzerland and ordered from a UK company!!!! They had the

Hi Dave Thank you for your E mail from other E mails it appears this item is not supported by the normal 70900 local oscillators So only fit to stripe down for parts Could you post the clip on a site

I have the service manual and the CLIP for this module. Let me know if you have any specific questions. Thanks, David Slik VE7FIM wrote:

Hi Or treat yourself to a thermal imaging device i have found it to br very useful.