Repair of the CPM700 Counter Surveillance Monitor (Bug Detector)
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Done.
Haha must be those Russia spies
How does one repair or replace the LCD screen (leaking ink symptoms), on the CPM?
Are there off the shelf LCD screen / parts available?
Can u do a video showing how to fix a homedics knee and calf massager when it makes a loud noise but the rollers don't work. It's defective but bedbath and beyond refused to let me exchange it for one that works even though I never used it
What horrible engineering in this device. Literally horrible. A drop resistor in front of a MCU. W T F. Made in USA. Well okay.
I'm glad I finally watched this video, as I had somehow escaped hearing "Assumption is the mother of all mistakes" until now. This now has me going down a rabbit hole tracing the genealogy of superstitions, many of which were born of Assumption and fathered by Ignorance. It's a frightfully incestuous family shrub.
I noticed the AUX input on the FIRST video. but I thought nahhhh, davie is too smart for that!
you didn't show us the wall adapter one!
Could it be that they've been using some kind of custom probe there that needed the resistor change to detect?
damn now i have to cancel my planned bug parcel
Nice! 👍
Ironic in the previous video, you attacked the lack of a preamp. Surprise, it’s in the antenna. Then you attacked the lack of sensitivity, but now indicate the unit was malfunctioning 🤔. Me thinks that you are a bit jaded, against the #1 TSCM Equipment manufacturer in the world. It’s 40 year old technology. Let’s go back and critique 40 year old televisions. Take a look at the Andre, if you want to be relevant !
One of your best Dave. Thank you.
I too agree with some other viewers about the voltage rail setting. Has the device got any TIL chips in the circuit. If it does this would give a clue as to what the Vcc rail should be. I think it should be 5 volts. As it has a preset pot, this could be faulty.
That thing kind of reminds me of mr. Carlson's super probe. It's on Mr Carlson's youtube Channel.. you can buy the parts and he will teach you how to assemble it and use it for electronics repair. I don't know Maybe it's a completely a different thing? It just kind of reminded me of it…… pretty cool old technology.
If you can find a Sams photo fact, you might find the print. Just a thought.
The PCB layout design looks very amateurish.
DAVE is using his "EEVBlog" Multimeter !!!! I want the one he endorsed with
the built-in Transistor Tester Socket !!!!!! 🙂 (Just joking Dave )
Something far more economical and portable… El cheapo CC308+ on Ebay. Used the darn thing to show a customer how their RF transmitter was interfering with their on board DC regulators during manufacturing test. Major yield problem! Made a nice video of when the cell phone chipset started transmitting (detected on the CC308) simultaneously, my cheap TDS2014 showed the LDO power dropping out! I remember a crazy friend demonstrating this on a Harrison Labs power supply with his Amateur Radio "handy talkie" in college during a lab. Wasn't funny then!
Love it! Dave gets schooled by the circuit he said was so simple in the first video. I wonder if he'll balk at right angle traces so easily next time.
resistance box? shit. something else i don't have…
Can someone explain why they sometimes scrub the numbers off parts?
LOL i noticed the AUX input in the first vid…but thought you'd know better so i didnt comment!
Awesome you did decide to fix this. 🙂
And for the solid state pinball machines I get in I always change out the electrolitic caps and the bridge rectifiers as most SS pins are 30 years old.
Speaking of pinball machines I am making my own with tiny boards in it.
Using Open Pinball Project boards right now that are on a PSOC controller. 🙂
I just streamed yesterday putting another of my pinball boards together.
Was about 5 hours of soldering components and wiring and pinning stuff.
And I'll go to it again cuzz I am not going to give up even with the last psoc/coil test blew up the psoc. 😐
made here in Tennessee … 😛
nice one !