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staticmind · 16th May 2020, 10:21 pm

All tubes arrived.

I changed PCF80 in the tuner and PCF80 in the line separator circuit, because the the video section is also an input to this part. I also replaced PCL84. All tubes are NOS.
I took apart the tuner and replaced a few resistors which were out of tolerance. The silver contacts were also carefully cleaned (using Kontakt WL, 60, 61).

The result is the same, about 120V on the CRT cathode. I'll dig into this again later - but does it sound like the correct approach to look at the Image IF circuitry next, or is there something obvious I'm missing?

I still have line whistle, and the speaker is producing white noise.

16th May 2020, 10:21 pm	#55
staticmind Tetrode Join Date: Sep 2019 Location: Aalborg, Denmark Posts: 97	Re: B&O Capri 606 TV (17") restoration All tubes arrived. I changed PCF80 in the tuner and PCF80 in the line separator circuit, because the the video section is also an input to this part. I also replaced PCL84. All tubes are NOS. I took apart the tuner and replaced a few resistors which were out of tolerance. The silver contacts were also carefully cleaned (using Kontakt WL, 60, 61). The result is the same, about 120V on the CRT cathode. I'll dig into this again later - but does it sound like the correct approach to look at the Image IF circuitry next, or is there something obvious I'm missing? I still have line whistle, and the speaker is producing white noise.