retrobits | Why does my 1084S only display PINK?! @retrobitstv | Uploaded August 2024 | Updated October 2024, 7 hours ago.
My childhood Commodore CRT is broken... Again. I failed to fix it twice before – will this time be any different?

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00:00 Introduction
01:21 Everything is pink!
02:01 How NTSC color works
04:27 Hue control?
05:09 Disassembly montage
06:02 TDA4570 NTSC decoder chip
07:22 Testing the hue control
09:30 Simulating the circuit
10:35 Testing the potentiometer
11:35 Testing 12VDC power
12:08 Testing chroma input
12:52 Testing the crystal oscillator
15:12 Testing passive components
15:44 Testing the 4570
17:43 Conclusion