#46
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Noticed that the chroma tint drifts while the set is warming up. Maybe I should do a AFC color alignment?
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#47
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Went ahead and did some color AFC alignment. Tint shifting has become a lot less noticeable and I rarely have to adjust anything now. This picture is looking as good as the CTC-7!
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#48
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Should I still check the HOT current even though I installed a 120mm fan on a fabricated metal cover I made? The fly gets warm to the touch but not too hot after being on for 45mins to an hour.
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#49
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Does not matter (even if the set does not need the current checked) it should ALWAYS be checked when you get a set and the linearity/efficiency coil adjusted for minimum current.
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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 |
#50
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What current level is considered safe for a CTC-5?
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
Audiokarma |
#51
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There's no hard and fast number for any set, you adjust for minimum reading on the meter.
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Evolution... |
#52
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As miniman said you want min current in operation, BUT there is usually a safe(ish) max that is published in the sam's for most sets (usually in the horizontal adjustment procedure). If over max after warm up assume something is wrong.
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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 |
#53
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From where do I measure the current? Manual says the h out tube fuse holder is where the current can be measured I hooked up my 27fm and I am not getting anything....
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#54
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Be sure the probes are connected properly to the meter to measure current. Also remove the H out fuse and put the probes on the fuse connections. You want the lowest current, but it should never go above 210ma. If it is over 200ma I would look for other problems. HO current should always be the first thing you check.
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#55
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When the HV just comes up I get about 179 ma after about 4 seconds it starts jumping around I go from 400ma to 900ma and it just keeps jumping around... What is going on?
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
Audiokarma |
#56
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Your meter sucks. This is why I always just read milivolts across a 1 ohm resistor inserted from the cathode pin to ground or wherever, takes the guesswork out. Most of my sets have one permanently installed, in a spot where I don't have to remove the chassis to get at it.
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Evolution... |
#57
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Holding at 230ma. Went to adjust it and the slug is frozen in the coil. How do I free it up without removing the chassis from the cabinet?
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#58
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If 230 ma. is a correct reading it's gonna cook the H.out tube in short order. It ain't too easy on the flyback either.
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#59
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You free the slug by trying to turn it while heating the coil with a heat gun or hair dryer, or if the lin coil wires are reasonably thick and your adventurous you could hook a "D" cell battery across the lin coil and let the battery heat it like I did successfully on my CTC-4. Wax melt is likely what is holding it.
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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 |
#60
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The lowest I can get it is 220ma which is OK according to the service manual. What do you guys think?
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
Audiokarma |
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