Quote:
Originally Posted by vol.2
Did you say this was a hot chassis and that's why you're doing the opto-isolator?
Why would this set have a DIN input on the back if it's a hot chassis?
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My TV is a CPT-1455, and it is a RF only hot chassis. The one with the DIN-connector is the brother, CPT-1444, and I used it as an example. Unfortunately I do not have one.
They are almost identical and have the same chassis number, "NP84CQ/2" for the CPT-1455 and "NP84CQ" for the CPT-1444, but the main difference is the isolation transformer and the DIN-connector on the CPT-1444.
Here's a
Reddit thread where they discuss the RGB connector of the big brother CPT-1646, and
here's one for the CPT-1644. These also have the same chassis number as 1444 and 1455. They seem to agree that it's a standard RGB signal with composite sync.
The PCBs will arrive next week, and all the other components have just arrived today. Pretty excited to revive this TV with new inputs, and get rid of the RF modulator. If this works, I will attempt it on two other RF only TVs that I have.