The Electric Mistress Repair 

Wow, not only an electronics genius, but Mark also plays guitar 👍👍👍

Watching People actually manefacturing stuff instead of buying or outsourcing is awsome!!!! please more!!!!

Is there no end to your talent. I’m very impressed with your efforts on this one Mark.

Before this channel, you couldn't easily find it all together in one person: knowledge, charisma and sensibility. Mr Mark, you're all of those things, your channel is one of the best here and I look forward for more from you, sir. Well done!

Just what every electronics workshop needs, a test strat.

Etching your own board, finding a functioning chip replacement. You're a beast Mark , thank you! I've been watching your videos for the last several evenings

“Better discharge the static…Not that there is any in this country” 😅

I can build and troubleshoot electronics, and I have a lot of fun with it. However I can testify that Mark is on a completely other level. Great to witness this proficiency. I am also impressed with the cheerful easygoing attitude. Cheers Mark

That’s why I loved fault finding as nothing quite replaces that buzz you get when you switch something on after a repair and it works ! It takes a certain type of person to be a technician. It’s addictive lol. The more complicated the repair the bigger the buzz. At nearly 70 I can’t do delicate work anymore due to trembling hands and it’s so annoying, but I still have all the test gear !

Never seen handmade pcb's before - I've just been educated AND entertained! Thanks man, you're a modern day McGyver!!

Glad you liked the T strippers! Ideal entered the market with abrasives for DC armature maintenance and branched out. Glad you got some nice sounds out of the Mistress.

It’s always a great day when Mend it Mark uploads a new video. Thank you!

Подумал - Сашка Лаэртский, ан нет. Но когда в конце заиграл на гитаре - засомневался ) Спасибо, вы очень крутой спец!

That really took me back to my CDT lessons, I loved making printed circuit boards like that 😊

Hi Mark, as a fellow engineer from Walsall I just wanted to thank you for the enlightening videos ,keep up the good work, every day is a school day 😆👍

Any machine you don't have?.... lol Thank you Mark for letting us walk along with you on these projects. Sorry about the fake chips. Really enjoy watching you work your magic. Thank you from the US!

Wow solid work! 😀 Lovely bringing a device like this back!

Is there no end to your talent ! Last video I saw you replaced the writing on a Technics amp as the cleaning foam you used erased it off the brushed metal plate on the front! And now you're designing PCB boards and replacing an IC and using a modern equivalent - somehow making it work! Then to top it off... a bit of guitar at the end! Genius! Wished you were closer, I'd love to come to your workshop just for a visit - and maybe learn from the master!

The counterfeit market makes things super frustrating! I loved that you made your own PCB for the replacement.

As usual - very clever and resourceful repair. I think I might have added a power light as a bonus.

What an absolute pleasure to watch somebody who actually knows what they’re doing 😎 Shame you’re maxed out with work, Mark - I’d love to send my old EHX Deluxe Memory Man in…

watching you work your magic, i regret not getting into electronics when i wanted to, as a young electrician apprentice. Now im just a sparky, but playing at fixing amps as a hobby, learning from you at nearly 50. Thanks Mark

Brilliant! Love watching your repairs - its the chuckle that's the icing on the cake!

Now.. thats what I'd call a professional repair.. lots of time and effort spent..

That old peddle has a nice warm sound to it. Your nice little modification board was the most interesting bit of that process. Nice work. You have a lovely workshop, it would be interesting to do a little mini- tour of it in a video one day. BTW - I love your guitar, lovely colour.

I used to work in a small music store in the 90s, and I had to deal with very similar repairs as this one. To be honest, I would have just hard wired the different chip with jump leads. Crude, but effective. I like your way better.

Im so glad i found this channel. Please more of these. So cool.

... and you're a muso as well! I'm more impressed every day Mark 😆 Possibly the most impressive tech repair channel ever mate, love your work!!

Is there no end to this man's talents ...........................................

11:12 Thanks for the great tip of floating the non-drilled single sided PCB on the etchant!

to align all the legs before soldering them you can use a spare socket and press the legs into the spare socket and then solder all the pins at the same time.

Just when I think you cannot impress further, you push the bar even higher. Your channel is a never ending source of education and entertainment. Thank you for taking the time to make these videos Mark!

Jasus! As always an amazing repair and engineering work Mark. First time I’ve seen you play, no end to your talents. You’ve opened up a big can here Mark with your work around. You’ll be bombarded, I’d like to jump in first, will you make me one of those boards for my HH Clockwork Concubine, I’m on my last 1024A Might try buy some 512s as spare. Keep up the brilliant work. Thank you Trev

The SAD1024 is virtually unobtainium. They sound great for guitar, though. I've made a pop-in replacement using more modern chips, as have others.

I've watched many of your videos Mark .. and there's always another bit of kit! Wire roller ... chip straightener - awesome

Chip straighteners? Who knew? That was really interesting Mark,even though a lot of it was over my head🙄Nice Strat BTW

...you can also play guitar. That's awesome. I've been watching several videos. You are a GREAT technician. They are hard to find anymore. You have great equipment and great instruments. Congratulations.

Astonishing knowledge and skill - Brill

my main interest in electronics is audio..guitars, pedals amps, mics, preamps, mixers..love these ones

Respect, this brought me back some solid memories of lessons creating boards using nasty chemicals, awesome!

Ahhh Mark, I have to go to bed ffs! Oh well. 30 minutes less sleep can't hurt.

Man I did not predict that a home made circuit board would be part of the fix! That’s truly next level stuff! I’m sure you have no shortage of things to work on but the guitar community are predicting a huge drop off in the number of people capable of repairing tube amplifiers in the next few years. Would you consider making some content tackling common issues associated with guitar tube amps?

Mark, Thank-you for your response on your Cats name! I just started watching your video's and now I can't stop! So interresting. I have those wire strippers myself, Their awsome! I live in the United States, In a small town in Northwest Ohio Called Maumee. So your vids reach far and wide! Keep up the great work! Mike Z.

Omg, nice guitar! This was a fun episode.

just incredible

You are a pretty incredible dude. You've reignited my love of electronics, that is, the knowledge of each component, identifying circuits. Keep up the good work.

Wow, last time I did this was probably 40 years ago ! You rock!

Brilliant, I started 40yrs ago as a pcb process engineer, that was genius…

You are a genius, Mark amazing skill level

I've got a late 70s, Mistress (the 2x9v) version that I got as my first ebay purchase back in 2004. Sold as "untested". When it turned up no sound. I found a pedal repair guy who thought the same as me that the SAD1024 was dead. Luckily the only issue was one of the 741s had died. He replaced it and it was good. I really needed to get that pedal down from the attic to test it as it's been 10-15 years since I last plugged it in

Thanks, Mark. I love your presentation style and excellent production qualities. Cheers!

Multi talented, very impressive. Thanks for the great videos Mark. Keep 'em coming.

I graduated high school in 1979...I can only imagine what songs played through that guitar pedal effects.

Fantastic video. Well done. Mike Matthews would be proud!

Amazing video with so many twists and turns! Let’s make a PCB and get the Strat out

Gday Mark, bought a Caps set for my amplifier and a supplier from bulgaria, was fast and all looked fantastic, until I sent a pic to my brother who got the same only to be told by his elec tech they were fakes. 😢. Disappointing when you expect something for the money. Just as well we didn't get them soldered in! Enjoyed watching you vid. Cheers from Tasmania Australia a long way from Bulgaria!

It's fascinating to watch you repair things. Thank you for sharing such a entertaining video.

It's fascinating to watch you repair things, thanks for your videos !

Excellent fix, as I recall Electro Harmonix made two versions, the Electric Mistress and the deluxe version, I have owned both, way back, trying to simulate a Leslie organ cabinet, I was given one that had been installed in a box, for free standing rather than floor use, I sold it for a considerable amount, maybe somebody was buying it for the components !

Any other technician would say " irreparable", but not Mark. Greetings from Brazil.

Well done sir ! I’ve also had the pleasure of buying fake chips . Always disappointing. And the sad part is they weren’t even that expensive of a chip or very rare to begin with . Just never know what your getting anymore!

Great work again. And didn’t know that you can play guitar as well.

Amazed that you went straight to making an adapter PCB without testing the modern chip on breadboard or similar. You know what works right away.

Musical Mark Mends it. Well done ! 👍

Your process for making these videos is spot on. I can't tell you how much I enjoy your work, Mark. The breadth of gear you cover is awesome I can honestly see you going a long way!

What an amazing fix. Found your channel recently and am loving it. Real hardcore techie stuff.

Another great video, Mark. Definitely a lesson learnt about fake chips - and not a bad guitarist, either.

One of the most involved music videos I've ever seen.

This man tools. Seems to always have the right machine for the job.

I like to leave the excess photoresist on to keep the tracks from oxidising. Not that it does any harm, but it looks nice that way. But I rarely do boards at all these days, the costs of production boards with soldermask and silkscreen and everything is just too attractive. Still, the capability to spin your own boards is great for those times where you must have something _today_ . Anyway, this repair was top notch. Please explain how I can like this video twice!

Really enjoyed the design and build of a “custom” chip👀 superb.

Haven't seen that pedal in many, many years!

Mark, Really happy that you found the wire strippers useful! I've had a few Electro-Harmonix gadgets in my rock-n-roll days. LBP-1, and a Mike Matthews Freedom amp. Freedom because it also was battery operated. Mike Matthews was the founder of Electro-Harmonix back in the70s. Thanks for the acknowledgment. Solder on!

I didn't know you could play the Guitar,a bit. - Greetings to the best electronics Craftsman, We see you often.

Hi , I just want to say how much I enjoy watching , you are brilliant at making the very technical repairs interesting and fun.

Love to read those schematics with you. Takes me back, very very satisfying.

It's great to watch a genius at work. A man of many talents.

Very very impressive repair Mark, simply fascinating skills.

Once again, a most enjoyable video Chris

I've used Ideal Industries strippers for years - fabulous tools. People seem to like the auto clicky things nowadays but for the old fashioned types these are reliable and sharp.

Just brilliant.

Excellent modifications....

The guitar was the cherry on top of the cake!!

Impressive repair, Mark. Every time I see one of your videos I know I'll see a new tool. I've had a few pedals in the bone pile with bad 1024's. I may try to get a real 512D and use your engineered pcb adapter.

Such men need the world. thank you for your value.

Are the numbers at 21:30 different?

A man of many talents..............

Yeah magic Mark time!!!🎉

Always enjoy to watch Mark working, so good working methods, cool tricks.

really enjoyed that episode. Thanks!

Excellent Mark. Just found your channel and amazing work mate.

Fantastic work Mark, keep the vids coming 👍

felt so bad for you mate when it turned out those chips were duffers but you have a really positive personality. I'd like to be more like that, it's a better than feeling annoyed all day which is how i would have reacted😊

Your approach is spot-on. Top-notch work, Mark. I guess I’m gonna get that mechanical workshop going after all :)

Super video. I loved the PCB fab and Circiut design!

Great job, well and thoroughly done😮

Great work, Mark. got the same pair of strippers in my college electronics kit and they stayed quite sharp for around 12 years.

Great video. Thanks

Good repair Mark and nice guitar playing at the end.

TOP shelf, mate. You've got skills!