Thanks for the offer, but I am in the UK. I have a few bits I need so I can order these parts soon.
Regards Rob > -----Original Message----- > From: cctalk <cctalk-boun...@classiccmp.org> On Behalf Of Nigel Johnson via > cctalk > Sent: 13 May 2020 11:30 > To: Rob Jarratt via cctalk <cctalk@classiccmp.org> > Subject: Re: Replacing Power LED on MicroVAX 3100/95 Power Supply > > If all you need it that little mounting collet, I have a dozen or so of them > somewhere for the price of postage from Canada! > > cheers, > > Nigel > > > On 13/05/2020 02:23, Rob Jarratt via cctalk wrote: > > That's fantastic Maciej! I often buy from Farnell, so there is no > > issue with getting those parts myself. When I have accumulated enough > > wants to warrant an order I will get them. > > > > Regards > > > > Rob > > > >> -----Original Message----- > >> From: cctalk <cctalk-boun...@classiccmp.org> On Behalf Of Maciej W. > > Rozycki > >> via cctalk > >> Sent: 13 May 2020 02:41 > >> To: Peter Coghlan <cct...@beyondthepale.ie>; General Discussion: > >> On-Topic and Off-Topic Posts <cctalk@classiccmp.org> > >> Subject: Re: Replacing Power LED on MicroVAX 3100/95 Power Supply > >> > >> On Sun, 10 May 2020, Peter Coghlan via cctalk wrote: > >> > >>>> I seem to remember people saying it is quite difficult to replace > >>>> these, mainly because you can't get them out without breaking the > >>>> holder. Is that right? Has anyone done this successfully and have > >>>> any > > tips? > >>> Is this the green LED in a H7821 PSU? I managed to get one out of > >>> the holder with a bit of difficulty before I realised I could have > >>> left it in place and the board can just about get past it when the > >>> plug at the far end of the leads feeding it is plugged out from the board. > >> If the holder is the same as with the H7826 PSU, then it's a > >> generic part > > still > >> manufactured. I bought whatever was the minimum quantity sold by > >> Farnell when I broke one along with the LED a few years ago. I still > >> have a few available and I could post one set once I am back to my UK > >> home (which is given the current situation regrettably not going to happen > anytime soon). > >> Otherwise you can order it yourself: > >> <https://uk.farnell.com/broadcom-limited/hlmp-0103/mounting-clip-ring > >> - > >> 5mm-led/dp/8576378>. > >> > >>>> Are there any recommendations for a replacement? If I remember > >>>> correctly the LEDs used in those days were not as bright as modern > >>>> ones and a modern one would end up being much brighter because of > >>>> the > >> higher voltage maybe? > >>> Maybe it would be possible to tack blobs of solder onto what's left > >>> of the leads on the original and use them to attach fine leads, > >>> digging out a small amount of the LED casing around the leads if > necessary? > >> I chose an LED matching the original colour, also of the case, as > >> closely > > as > >> possible: > >> <https://uk.farnell.com/vishay/tlhg5205/led-5mm-green/dp/1045482>, > >> but > > still > >> haven't installed it (well, ahem, I need to fix the PSU itself > >> first), so > > I can't > >> comment on the result. I could post one of those along with the > >> holder if needed (subject to the condition noted above). > >> > >> An LED will dim with use, so you may not be able to closely match a > >> worn > > one > >> with a brand new part, but I suppose you don't actually need to be > >> *that* exact with your equipment, do you? Otherwise you can always > >> put a resistor in series to dim the light produced. > >> > >> HTH, > >> > >> Maciej > > > > -- > Nigel Johnson > MSc., MIEEE, MCSE > VE3ID/G4AJQ/VA3MCU > > Amateur Radio, the origin of the open-source concept! > > > You can reach me by voice on Skype: TILBURY2591 > > If time travel ever will be possible, it already is. Ask me again yesterday > > This e-mail is not and cannot, by its nature, be confidential. En route from > me > to you, it will pass across the public Internet, easily readable by any > number of > system administrators along the way. > Nigel Johnson <nw.john...@ieee.org> > > > Please consider the environment when deciding if you really need to print this > message >
