This is probably one of the most informative videos on pcb repair I have ever seen. Thanks!

This is one of the best arcade PCB repairs I seen. Thank you ! This should help me with my Dig Dug repair.

Great job with the repair. Loved hearing the explanations and your thoughts as you went along. Thanks for taking the time to upload and share!

after watching this repair video i just wanted to say you are definately a patient person most people would have given up but you still carried on, im definately going to keep watching your repair videos im going to try to attempt to fix my original terror force pcb board myself but im new at all of this so im learning as i go.

Nice job with that repair. During the video, I coudn't stop thinking of how I would have done without this magic Fluke equipment! 😊

In a recent video you showed how to track issues like this down with the basic tools like a logic probbe and oscilloscope. After watching this video, I think those first three chips would've been possible, but that last one that was intermittant would've given you a headache if you didn't have the fluke. I love the approach, though. Work on one problem at a time, don't try to move onto another area of the board until you know you've found everything on the area you're working in. Thanks for the great videos. They're a real pleasure to watch!

Fantastic work! That board had quite a few issues =O

Good sleuthing as always!!

Endlich mal wieder ein langes und interessantes Video Schöne Fehlersuche 👍👌

Nice job! I can never learn enough methodical fault finding from a pro. That last buffer with the intermittent failure would have been a tough nut to crack without the Fluke I think. I wonder if there are any modern replacement projects for the Fluke. It looks like an invaluable tool for fixing retro stuff and shouldn't be too hard to make.

Deine Videos sind so gut, wir brauchen mehr mehr mehr mehr

Well done, and thanks for making the video

Yay! 👏 Well done with this repair. As usual, a very systematic and comprehensive approach to diagnosis and fixing of the faults. Admittedly it needed the "big guns" (oscilloscope and Fluke) so not everyone would have the resources to do this fix but it was very interesting to follow your methodology. As soon as you showed the 74LS245 I thought "there is a prime candidate for failure" straight away! They do tend to fail rather often (as do '04 hex inverters) which is quite alarming as I use these a lot in my designs! The only issue I would have with your testing is that these devices need to be checked for 4 cases - correct inputs reaching the device on reads and writes and those inputs being transferred to the outputs correctly on both reads and writes. Finally I must complement you on your English - "tertiary" is indeed a word in English and one that most native English speakers would not know. I would not have even dreamt of trying to translate this using my basic schoolboy German! 😳

I hope you enjoy in Munich 2022 Europe champion Chip competition

Viel gelernt, danke!

With Dig Dugs, you're better off replacing all the sockets and cleaning up all the Customs before starting troubleshooting. Bad sockets and corroded customs cause a majority of the issues.

Another great video. Do all arcade boards have that "watchdog" ?

one of the best games

Wir brauchen schnell ein weiteres Video

Which chips are responsible for graphics? Is there any one chip responsible for the title screen?

Schönes Repair Video. Macht wie immer Spaß zu schauen. Schade nur, dass es so niedrig aufgelöst ist, also 360p. Die anderen Videos bei Dir waren bisher wenigstens 720p. Ist da was schief gelaufen? Zu DigDug: einer meiner Lieblingsautomaten in den 80ern, weil man für 1 Mark relativ lange zocken konnte. ;-)

That 50 ohm seems to be to VCC, not GND.

When the CPU is writing Address 6830 the decoder IC chip will output a watchdog reset signal? Why didn't you use the FLUKE to WRITE to address 6830 and loop it when testing the decoder IC chips and other IC chips?