#16
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The part of the chassis, you don't see is the power supply. It has the voltage regulating transformer like Zenith and a few others used. They referred to those as "redundant" capacitors. Zenith should have stayed with the multiple safety caps, like used in the "E" line, instead of the single one in the "F" line. Cost savings, NOT!!!! |
#17
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Seems rather risky to me to run a single-safety cap Zenith even if the cap is an orange drop. I doubt that they are immune to the kind of failure the white ones are prone to.
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#18
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Not saying that it can't happen; but, I've never seen an open orange drop in a Zenith and I have not heard anything about one opening. On rare occasions, they have been known to short; but, all that generally does is trip the circuit breaker.
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http://www.youtube.com/user/radiotvphononut |
#19
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Only the earliest orange drops I've seen (early to mid 60's) in high heat areas of tube sets have showed signs (eye not fully opening in capacitance measuring mode on my heath C-3) of starting to go open.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#20
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there are a lot of numbers at the back of the set...let's see : - HY644914 - 68P72601A21 -47H31YWU9314NK It would be logical that the canadian branch was included in the deal, so I assume that by may 74, Quasar was panasonic in canada also. |
Audiokarma |
#21
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Ok, yes it's certainly a Canadian made set because of the "Y" in the model number. It's interesting to note that even though Matsushita purchased the Quasar division from Motorola in May of '74, it wasn't until May of 1976 when they had total control and ownership of ALL of the plants outside of the Chicago area that built consumer products. I was never quite sure what ended up happening with the Ontario plant after everything was finalized.
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#22
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#23
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Deltas are easy: get purity right, throw up a crosshatch pattern, get static (center) convergence right with three convergence clover magnets + blue lateral on neck, then go after the dynamic (area surrounding the center) convergence controls (on the board with all the pots and adjustable coils on it). Be aware that the dynamic controls rarely are capable of perfection over the whole screen. So once you get it right inward of 1-3" from the edge of the screen, and can't get it better, call it 'done right', and be happy.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#24
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Important words above - "Be aware that the dynamic controls rarely are capable of perfection over the whole screen" - how true!
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Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! |
#25
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I bought some Zenith orange drop double caps at a swap-meet. They were NOS, loose in a large box. A beautiful, sun shiney day. They turned a darker orange color, by being out in the sun. I bought a few, for a buck each.
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Audiokarma |
#26
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#27
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Purity procedure: with blank red raster slide *deflection yoke towards back of set until tye-dye picture obtained, use tabbed purity rings (located between convergence clover and blue lateral magnet on neck) to center the red spot on screen, slide yoke forward until uniform red screen is obtained, and leave yoke there, check work with green and blue screens.
The red field can be acheived in two ways: turn down green and blue screen controls (or in some sets [especially Zeniths] the CRT wires for a color can be unplugged which do the job without disturbing gray scale adjustment), or if you don't wish to adjust those controls and your color stages are rock solid you can send a primary-red test field to the set using a sig generator or DVD. *May want/need to use external degaussing coil to degauss CRT face at this point.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#28
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Jeff, WB8NHV Collecting, restoring and enjoying vintage Zenith radios since 2002 Zenith. Gone, but not forgotten. Last edited by Jeffhs; 04-23-2016 at 01:03 PM. |
#29
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Aside from the first chassis or two there were usually low tube (less than 5) count hybrids available (some to be cheap, some because certain SS parts were not ready to reliably replace tubes) till the mid 70's.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#30
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Audiokarma |
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