New CRT TV board. - UK Vintage Radio Repair and Restoration Discussion Forum

60 oldjohn · 20th Aug 2023, 2:44 pm

This CRT board manufactured April ? 2023, bought for $47 You supply the CRT, coils and case. Why bother making such in 2023?

John.

https://www.youtube.com/watch?v=MoqflFfvkR0

Vintage Engr · 20th Aug 2023, 6:33 pm

That's truly bizarre!
The results are pretty good though, considering it's only a domestic TV chassis, & multi-standard as well.
I believe that Chunghwa were one of the last CRT manufacturers. It's a pity they are not still around... we might have been able to get some CRTs re-gunned.
I wonder what happened to their manufacturing equipment.

David.

David.

factory · 20th Aug 2023, 8:59 pm

Quote:

Originally Posted by 60 oldjohn

Why bother making such in 2023?

For gamers that complain about lag with modern flat panel screens?

Also watching Shango066 last week, the movie prop industry has limited use for working CRT TVs, often with modern guts fitted, but it would need to work at 24FPS used by movie cameras.

David

McMurdo · 20th Aug 2023, 9:50 pm

I was quite intruiged by Adrian's use of the chinese board. Impressed by the width jumper and extensive setup geometry menu, but puzzled by the seeming lack of any frame height control.

For me who lived through the crt-swapping days of the 80's, used to greyscale adjustments and numerous other alignment even when fitting an identical-spec crt to a good chassis, the new pcb seemed quite at home in some random 14in tv..although the tube socket had to be swapped. Must be some magic going on in that new jungle chip!

John123 · 24th Aug 2023, 12:32 am

I remember seeing these for sale on AliExpress around a decade ago. Back then, variations of the chassis were also available with SCART and/ or Component Video; Teletext as another option. Not sure about NICAM or A2 Stereo support, but it wouldn't surprise me!

They're primarily aimed at developing nations where it may be harder to affect repair due to logistical issues (lack of spares availability, etc). A 'drop-in' replacement chassis thus giving life to an otherwise written-off set with a decent tube; cutting down drastically on e-waste.

20th Aug 2023, 2:44 pm	#1
60 oldjohn Dekatron Join Date: Dec 2004 Location: East Yorkshire, UK. Posts: 3,806	New CRT TV board. This CRT board manufactured April ? 2023, bought for $47 You supply the CRT, coils and case. Why bother making such in 2023? John. https://www.youtube.com/watch?v=MoqflFfvkR0 __________________ My favourite text message "I'll be there in five minutes, if not read again"

20th Aug 2023, 6:33 pm	#2
Vintage Engr Heptode Join Date: Jan 2008 Location: Shrewsbury, Shropshire, UK. Posts: 734	Re: New CRT TV board. That's truly bizarre! The results are pretty good though, considering it's only a domestic TV chassis, & multi-standard as well. I believe that Chunghwa were one of the last CRT manufacturers. It's a pity they are not still around... we might have been able to get some CRTs re-gunned. I wonder what happened to their manufacturing equipment. David. David.

20th Aug 2023, 9:50 pm	#4
McMurdo Dekatron Join Date: Jun 2009 Location: Staffordshire Moorlands, UK. Posts: 5,165	Re: New CRT TV board. I was quite intruiged by Adrian's use of the chinese board. Impressed by the width jumper and extensive setup geometry menu, but puzzled by the seeming lack of any frame height control. For me who lived through the crt-swapping days of the 80's, used to greyscale adjustments and numerous other alignment even when fitting an identical-spec crt to a good chassis, the new pcb seemed quite at home in some random 14in tv..although the tube socket had to be swapped. Must be some magic going on in that new jungle chip! __________________ Kevin

24th Aug 2023, 12:32 am	#5
John123 Heptode Join Date: Jan 2007 Location: Luton, Bedfordshire, UK. Posts: 883	Re: New CRT TV board. I remember seeing these for sale on AliExpress around a decade ago. Back then, variations of the chassis were also available with SCART and/ or Component Video; Teletext as another option. Not sure about NICAM or A2 Stereo support, but it wouldn't surprise me! They're primarily aimed at developing nations where it may be harder to affect repair due to logistical issues (lack of spares availability, etc). A 'drop-in' replacement chassis thus giving life to an otherwise written-off set with a decent tube; cutting down drastically on e-waste. __________________ Regards, John