Electronics > Repair
Repair Siglent SDS1102DL
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Bigfoot:
The silicon I'm referring to is on the small PCB stuck to the back of the LCD panel which has two connectors one is the end of the ribbon cable coming from the main PCB and the other is a socket for the Mylar (clear orange) flexcable which goes into the TFT display itself. This small PCB looks to be a bridge between the grey ribbon cable and the orange Mylar flexcable. The problem had nothing to do with the grey ribbon cables.

There's no tape on any of my  cables. There appears to be copious amounts of white (neutral core) silicon used. Quite a bit of it around the legs of a group of electrolytics on the Power Supply board (probably for HV insulation). I know this stuff shrinks with age and realistically I can see why this would cause a problem on the specific socket due to the construction. Once you pick off the silicon the socket latch comes away at 90deg to the cable, it's the hinged variety.  I didn't get a pic of this as the scope is all sealed up now.

There's a possibility this will occur with other units.  Very strange how the display was reversed though.

Anyhow I thank you all for the suggestions.

Bigfoot.
tautech:

--- Quote from: Bigfoot on July 30, 2015, 06:16:25 am ---The problem had nothing to do with the grey ribbon cables.

--- End quote ---
Gotcha. Thanks for the explanation.  :-+

--- Quote ---Quite a bit of it around the legs of a group of electrolytics on the Power Supply board (probably for HV insulation).
--- End quote ---
In many Asian products you find this.
More for mechanical reasons than electrical IMHO.
tautech:

--- Quote from: pickle9000 on July 30, 2015, 04:46:28 am ---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.

--- End quote ---
It's more than that pickle, don't you just love a good mystery too.

@ Bigfoot
This was a very unusual fault and your fault finding efforts/skill certainly helped.  :-+

Guys, I've asked Siglent (Jade) to refer this thread to R&D as it appears there might be a rare issue with the retaining silicon and the LCD connector.

Maybe it will never happen again.  :-//
Bigfoot:
It did look like a hardware issue rather than firmware and fortunately it was only a cable. Overall these scopes look pretty well constructed (apart from that power switch location |O |O)  I would buy another.

@tautech: A question for you, what are the chances of getting a new power switch from Siglent?

Cheers,
Bigfoot.


tautech:
AFAIK it is part of the PSU and unlikely to be available as a separate item.
I'm sure I've seen mention of similar breakages in past threads and mention of suppliers for them.  :-//
Maybe it was a Rigol.  :-//
It's getting late here and the brain is starting to fog up, I'll sleep on it.

E14 or RS is where I'd go looking for one.
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