New kit

I’ve installed my two new microscopes, the TOMLOV DM602 Pro which arrived today, and the Yizhan Microscope which arrived yesterday.

Using my new 8K 5-in 1-out HDMI 2.1 Switch I can put either of the microscopes on the top display. I can also put the Rigol MSO5074 scope and an Xbox on the top display. There is one spare HDMI port which is on the front of the device which I can use for ad hoc purposes.

Before the HDMI switch output runs into the top display (a Teac TV) it runs through a 4K Audio Video Capture Device which allows me to record the output for inclusion in my videos.

John's new screens

Early Content #9: OGXbox Recapping, Thermal Paste and Pro’sKit SS-331 Demo | In The Lab With Jay Jay

This post is part of my video blog and you can find more information about this video on this show’s homepage which is here.

You can support this channel on Patreon: patreon.com/JohnElliotV

In this video I recap an old OGXbox. I also redo the thermal paste. I use my Pro’sKit SS-331 desoldering pump in anger for the first time. I spend an inordinate amount of time trying to figure out my new tools. In the end the Xbox is still broken!

I sold this Xbox on eBay but it was returned to me during the warranty period (one month) as it was faulty.

In this video I mention a trick you can do in your browser when you’re watching videos on YouTube. Ordinarily the YouTube user interface only allows you to set playback speed to 2x, but if you want to set it at 3x or higher you can do so by pressing F12 to bring up developer tools, then open the Console, and enter this code:

document.querySelector("video").playbackRate = 3.0;

Change the number to change the playback speed.

In this video I mention that it was in a video from Bruce from Branchus Creations that I got the recommendation to try a beveled soldering iron tip. Having given it a bit of a go and not really having great luck with it I am going back to a small chisel bit instead.

I comment in the video about how you don’t need to replace the clock capacitor on a v1.6 board, but Harcroft on the ConsoleMods.org original-xbox Discord forum reminded me that sometimes you do need to replace this capacitor.

The capacitors I use for this recapping are Chong 6.3V 3300μF Low ESR caps. Of course the board didn’t work after recapping so it’s possible these are dodgy caps.

I’m pretty sure I did damage the tip on my desoldering pump by putting the temperature all the way up to 480°C. Maybe don’t do that yourself. I believe anything over 380°C can damage iron tips (basically they melt!).

Thanks very much for watching! And please remember to hit like and subscribe!


Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!

ZKETECH EBD-A20H Electronic LoadThis is an image of the product.notes

Let’s go shopping!

TOWOT Industrial Tweezers

I purchased some high-precision tweezers which arrived today. I got these ones: TOWOT Industrial Tweezers (SA11-15) from Amazon for AUD$58.95. Haven’t used them in anger yet but they look pretty good. I got these because I tried working with my cheapo tweezers which I already had, and they weren’t up to the job. So hopefully I have better luck with these ones.

Op amp tester

I was watching How To TEST OP AMPS Using A Multimeter vs Op-Amp Tester Project Single Dual and I learned about this Operational Amplifier OP AMP Tester For Single Dual OPAMP TL071 TL072 TL081 TL082 Single/Dual Op Amp Test Board.

I have to cool it on the spending for a little while, but I’ve made a note of this on my shopping list.

Thermal imager FTW

I was just poking about with my new thermal imagers and I found one of my power bricks was warm, while the one next to it, on the right, was not. Turned out the one on the right wasn’t plugged in properly! It was supposed to be powering a USB hub, but the hub was bus powered, not mains powered, and I couldn’t tell. I mean, all of the lights were on, and the power brick was plugged in, so I hadn’t suspected anything. If I hadn’t made this discovery with my thermal camera I would probably never have learned that my USB hub was unpowered. I could very well have run into problems with devices plugged into it being under powered, and I would never have known why.

Unboxing #3: Unboxing of UNI-T UTi260B Thermal Imager with Macro Lens | In The Lab With Jay Jay

This post is part of my video blog and you can find more information about this video on this show’s homepage which is here.

You can support this channel on Patreon: patreon.com/JohnElliotV

In this video I unbox my new UNI-T UTi260B thermal imager with macro lens and compare it with my Noyafa NF-521 thermal imager.

I made a few mistakes with the production of this video, sorry about that. I made a mess of the side branding, I will have that fixed in future. And I managed to get my toes on camera. The height of professionalism!

In this video I refer to my lab equipment documentation. Particularly I mention the Jackcat Mini Cutter electric scissors.

Note: in the video I’m not sure what “ROI” means, but it turns out it means “region of interest”. The region of interest is a box in the middle of the display, and some settings apply to this area.

Thanks very much for watching! And please remember to hit like and subscribe!


Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!

Yum Cha Heavy Duty Stainless Steel Wire BrushThis is an image of the product.notes

Let’s go shopping!

Philips QT4022

This evening I was working on a battery replacement for a Philips QT4022 hair trimmer for my friend. They don’t seem to make this model any more, it was hard to find useful info about them. I made some notes over here. In the end I accidentally released the magic smoke, but at least I got some practice using my soldering iron and my microscope (this evening I learned how to take photos with my microscope and transfer them to my computer, haven’t done that before).

I did start off making a video about this, but it all went very badly, so I’m not gonna be publishing that one. :P

I learned a few lessons:

  1. take photos of the circuit board before you take to it with a soldering iron. This is so that if you damage the circuit board or the silk screen you can still read the component markings on the photo even if you damage the board.
  2. use the max current and max voltage settings on the power supply and don’t exceed sensible values for those. (200mA for DC motor is a sensible limit, 6A is not.)
  3. if you’re dealing with a circuit that has batteries soldered in, and you’re attempting to desolder the batteries, you need to be careful the solder doesn’t melt and create a short circuit, because it can, and it will.

My soldering skills are pretty poor at the moment. What I need is lots of practice. I’m not sure what the best tips or the best temperatures are yet. I accidentally lifted some SMD components because I used too much heat too close to them.

RIP Philips trimmer.