Electronics > Repair
Repair Siglent SDS1102DL
Bigfoot:
OK. I'll give it another try. I did clean the contacts with isopropyl alcohol and I understand these ribbon cables can be problematic. We'll see what happens.
Bigfoot:
I've removed and reseated both ribbon cables , also inspected for cold joints on the mainboard cable socket with a magnifier and can't see anything wrong. The LCD mylar flexcable has factory goop all over the end so reluctant to touch that. I've also removed the LCD ribbon cable and checked continuity on each individual line and it also checks out OK.
It still remains a mysterious problem.
Bigfoot:
Murphy's rides again!
I plucked the silicon off the LCD Mylar flexcable that goes directly to the LCD and reseated the cable, booted up the scope and the display is now back to normal see the pic. There you have it the cable socket is a hinged type that lifts off the cable as I discovered under the silicon adhesive so any contraction of the silicon over time is going to reduce conductivity of the cable to socket as it would have a tendancy to unlock the cable.
Alas I now need a replacement power switch as I inadvertently snapped it off at the mast. It didn't require much force to do this. The switch cap needs to be the first thing removed. Live and learn. :palm: :-//
tautech:
--- Quote from: Bigfoot on July 30, 2015, 12:29:17 am --- I plucked the silicon off the LCD Mylar flexcable that goes directly to the LCD and reseated the cable, booted up the scope and the display is now back to normal see the pic.
--- End quote ---
Not sure what silicon you mean. :-//
There usually is a fabric retaining tape to prevent accidental dislodgement for these ribbon cables.
IME it lifts cleanly and is placed above the tinned and exposed area of the cable and adheres to the socket. Lifting it can be a little tricky, I use a tiny screwdriver or the blunt side of a scalpel blade.
Anyways, you have it going. :-+
Pic of new factory supplied display ribbon cable as below.
~75mm long.
pickle9000:
I have to say that a simple thread like this says a great deal about Siglent and tautech. I would have suggest to Siglent that they post a disclaimer (do at your own risk) but regardless, two thumbs up on the just do it attitude.
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