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 Post subject: Looking for Working CRTs
PostPosted: Sep Sun 15, 2019 11:06 pm 
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Joined: Sep Sun 15, 2019 10:56 pm
Posts: 1
Does anyone know if a working 20cp/dp4 b&w picture tube can be found? Also need a 21fjp22a color tube. Appreciate whatever help I can get toward finding a source for one or both of these.


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 Post subject: Re: Looking for Working CRTs
PostPosted: Sep Wed 18, 2019 12:41 pm 
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Joined: Nov Wed 30, 2016 7:35 pm
Posts: 7539
Location: Sunbury, Ohio 43074
The ETF has your 21FJP22 but it's not listed as an A. You might want to check that out, and perhaps post on their classifieds as well.


https://docs.google.com/spreadsheets/d/e/2PACX-1vTgM1hiE6l8BzI0C5AAZAiXFwYbLubRElHq7ykPrb1dDoj6uBSgPU9DioI4yk0PXg/pubhtml

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 Post subject: Re: Looking for Working CRTs
PostPosted: Sep Wed 18, 2019 12:53 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 265
Location: Arlington, TX, USA
The only difference between 21FJP22 and the A version is the A uses the newer (at the time) rare earth red phosphor. The earlier one has a bit more orange to the red phosphor. Otherwise they are interchangeable. This type is probably the most common 21" round color CRT and should be easy to find a good one.


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 Post subject: Re: Looking for Working CRTs
PostPosted: Sep Wed 18, 2019 4:17 pm 
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Joined: Sep Tue 30, 2014 6:08 am
Posts: 5662
Location: Norfolk, VA
mb8940 wrote:
Does anyone know if a working 20cp/dp4 b&w picture tube can be found? Also need a 21fjp22a color tube. Appreciate whatever help I can get toward finding a source for one or both of these.


Where are you? That would help in some replies......I know of one 21FJP22 (slightly weaker red...) but he won't ship.

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 Post subject: Re: Looking for Working CRTs
PostPosted: Sep Wed 18, 2019 4:59 pm 
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Joined: Nov Thu 11, 2010 6:03 pm
Posts: 1305
Location: Pewaukee, WI
I've got some 21FBP22s that take 1/2 hour to warm up enough to produce a good picture that I'd give away...To someone willing to come here and get them.


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