Porta color
Hello guys, first time poster here. My love for tube gear pushed me to buy a porta color that was restored by a pro (I believe it’s a ‘67). I also bought a garage sale find as a parts donor. I’ve read the good and bad things said about these sets here, but this is a practical sized set to collect for my modest sized home.
Can you guys help me out with Sam’s photofacts and sources for spare parts, especially flybacks? I’m also looking for more of these sets for the crazy idea of building a boneyard of sorts. Any and all answers are welcome, even if they’re just to call me nuts. |
There was an early and a later porta color chassis that had revisions and thus different schematics. I scanned a photocopy of the early version's Sam's folder for a member here a few years back...I probably still have the file somewhere.
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I have two from the later 70's with high focus voltage CRT's and one from 1973 with low focus voltage CRT. The newer sets have a slightly better picture. :thmbsp: |
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Never put a FBT in a portacolor either. Keep in mind many GE
FBT's came in 3 separate parts to order. Core halves with spacers & U bolt, HV winding, and pulse winding. 73 Zeno:smoke: LFOD ! |
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The Thordarson FLY-641 is supposed to be an improved replacement for the original. I got mine from Moyer Electronics, to have as a spare. |
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Porta color
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I don't know of factory service literature -- just the Sams Photofacts. What is the model number or chassis number of your set? That will dictate which Photofact folder you need. I've compiled a spreadsheet of Porta Color model numbers and their corresponding chassis number and Photofact folder. You can view it here: https://docs.google.com/spreadsheets/d/1GP8SKSV7EBjYWrVu7AtFUl2oU7p1eyz8LaaJfeEFIYk/edit?usp=docslist_api I welcome any additions and/or corrections to this document. |
Unfortunately the factory labels for this set are long gone. I guessed the year of manufacture based on the cabinet and earlier tube lineup, including the 11sp22 crt.
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Have you opened it up? There ought to be some designations inside. At the very least, if you take some photos (external and/or internal), somebody could help identify it.
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I had to replace the flyback in my later model (mid-70's) Portacolor. I used a Thordarson from Moyers.
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I had it open when it first arrived to attach the power cord, don’t remember seeing any notable labels other than the CRT. I could check again. If it helps at all, the uhf tuner does not have the click stops. I’d gladly post pics but I don’t know what to do since the photobucket fiasco.
The tube lineup is 2gk5, 4lj8, 8ar11, 6lt8, 8bu11, 8bq11, 12jf5, 17bw3, 6ac10, 11fy7, 1ad2, 11bt11, and 12bf11. |
Based on the tube lineup, your set is not the H1 chassis, the earliest model. I had the H1 chassis and it had different HO and damper tubes (12GE5 and 12AX3).
My set developed a heater-to-cathode short in one of the CRT guns. Since there was already an isolation transmission transformer in the CRT filament circuit, I simply removed the 220K resistor tying the CRT filament to +145V. Later on, I came across the later version CRT (11WP22) and replaced the 11SP22. The improvement was quite noticeable due to the smaller dot size of the 11WP22. |
I may add the tube lineups to my spreadsheet for each chassis, if anyone thinks it's worthwhile.
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