Here’s a “ Laptop backlight converted from CCFL to LED” from a few years back, and this one for “ LCD: Replacing CCFL with LEDs” from even further back in time. Noise from the converter is likely to cause some performance issues, but that could be fixed by using a more expensive module with RF and EMI filtering. The one important caveat to be aware of is the effect of the LED DC-DC converter on the oscilloscope. ’s blog details all the steps needed, peppered with lots of pictures, on how to make the swap. Instead of trying to hack that converter to work off 6V, he opted to order out another suitable converter instead. The original DC-DC converter supplied along with his LED strip needed a 12V input, which was not available on the TDS1012. Nothing which could not be fixed with some silicone sealant. Maybe he was a bit rusty, as he ended up breaking some (non-critical) plastic tabs while removing the old CCFL. ordered out the parts needed, and having worked at Tektronix, knew exactly how to tear down the ‘scope. It showed how the CCFL can be replaced by a thin strip of SMD LEDs powered by a DC-DC converter. That’s when he came across a video by who hosts the popular The Signal Path blog. Even his back-channel contacts in Tektronix couldn’t help him nor could he find anything on eBay. Searching for an original replacement CCFL backlight didn’t turn up anything – it had been obsoleted long back. Here’s how he replaced the CCFL back light with a strip of LED’s and revived the instrument. But keeping it switched on all the time took a toll, and eventually the CCFL backlight failed. It served him well for quite a long time. got his unit before cheaper, and better ‘scopes appeared on the market. Even if the only one you can afford is the not-so-awesome TDS1012. When you work at Tektronix and they make a difficult to refuse offer for their ‘scopes, you obviously grab it.
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