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
