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In case anyone is interested, I have a Power One PSU that I traced out the schematic for one day. It's a 28V version though, and I'll have to check the model number later. But perhaps the schematic is similar to the one in this thread. The two AC sources are different taps on the transformer...

I've been going here: https://www.datasheetcatalog.com/ for quite a while. They don't have everything, but it is definitely a good starting point and they don't have ads/pop-ups.

I'll chime in on the battery question... Generally speaking, you do not want to recharge primary lithium cells. They are a rather fragile chemistry, and even pulling too much current from them can cause thermal runaway. Related, per FAA rules, all Li chemistry batteries of a certain size and...

The Dell XPS M1710 would be a good candidate if it weren't for the Intel CPU. I was using one up til 2016. They have a great display other than the fact it is a little dim. Had an Asus laptop from that era, looks like I sold it in 2014. Turion 64 CPU. I can't find the model, but here are some...

If you can hear the flashover, are you sure the flyback is bad? Have you run it in a dark room with the back off to look for the spark? It could just need some cleaning... Don't mean to throw you off your tracks, I just know FBTs don't typically go bad.

What kind of meter do you have? I typically don't trust most multimeters under 10-20 ohms... If you have an ammeter and voltmeter you can trust, you can put a known current through the resistor and measure the voltage, then apply Ohm's law.

Hopefully stuff like this will push the industry to design for repairability. I think that could relieve some pressure on the re-qualifying procedure as well, since in the 3rd-party repair world we don't tend to care as much about the authenticity of a component, as long as it works. They could...

Hirose RP17 looks pretty close to what I can see in your pictures... https://www.digikey.com/en/products/filter/circular-connector-housings/320?s=N4IgTCBcDaIE4AcCMB2EBdAvkA...

You got dimensions? Looks like Hirose might make something compatible: https://www.digikey.com/en/products/detail/hirose-electric-co-ltd/RP17-13RA-12SD-71/1035206 A search for 12-pin Hirose brings up a number of options...

The 5" PSOne or clone displays shipped with the smaller version of the Playstation 1 are pretty excellent. Unfortunately they're pretty expensive these days. Back in the 2006-2012 era, we were using them to make portable Nintendos and such. We also used the generic 3.5" "backup camera display"...

There are a number of methods for extracting MCU program memory contents that were effective up until the mid-2000s when the manufacturers started designing against them. Have you tried any of these tricks? I'm not too savvy on them, but I know many involve special power/reset timings and...

I had a Radeon x1950 Pro back in the day. Single slot, but did require one PCIe power connection.

If you really want a long serial link, and money isn't an issue... https://selinc.com/products/communications/transceivers/single-mode-transceivers/ Not sure how much cables would cost on top of that!

Just curious Chuck, do you go through the hassle of installing the proprietary Nvidia drivers on systems like this, or stick with Nouveau? (I only say hassle because my laptop has a Nvidia chip with the legacy 390.xx driver, or Nouveau. Both are a hassle in my experience.)

This seems similar to "glob-top" ICs on really cheap mass-produced PCBs. I can see it catching on for cell phones and the like. My question is, why even order parts that come in a package at this stage? Build the board as normal, test it, then install all your ICs as glob-tops. I suppose the...

I wonder if they'll ever catch on as a hobby like the stuff we deal with on these forums. Once the support for them ends, they essentially become a brick. There's no official way to install an OS on them, so I have trouble seeing them becoming anything more than a static museum piece. I think...

That is an interesting thought. I imagine UV EPROMs do have finite number of write/erase cycles, just as flash and EEPROMs do. I'm more interested in the thought of overdriving the erasures or writes to shorten or lengthen their lifespan or number of cycles they can go through. I will definitely...

I think putting new pins on chips is a common thing that happens in this industry. If it looks like the pins have been tinned, there's a chance they put new pins on them. The other reason they tin the pins, which you may be aware of, is to make the chips look "newer". I don't know if they're...

A "lifetime" subscription like this sounds more like an archive than a backup. But it's probably more of a backup that will suddenly disappear one day than an archive. History (even recent history) has proven one of the best archival mediums is paper. If you have photos you really don't want to...

I take that back, I my laptop has an i7-2860QM and also the Quadro 2000M graphics. Didn't get lucky on the display. however. Just a crappy 1600x900. Anyone have a suggestion where to get a good quality 1080p display for the W520?