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Sony Trinitron KV-40XBR800: Dreaded Blinking Standby LED!
Went to power up my big Sony XBR this afternoon, as I have without event for the four or so years I've owned it, and it wouldn't come up. I saw three distinct Standby LED patterns: Early on, a few times, four flashes; later, equal parts five flashes and six flashes. Possibly saw seven flashes once or twice. No high voltage or sound. When I got this set, the first thing I did was open it and clean it thoroughly. Nothing looked bad, aged, or worn out. I am REALLY hoping I can fix this. I love love LOVE this television...
EDIT: If the set is left alone for several minutes, when I press the power button, the speakers pop once and I get seven flashes.
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Sony Trinitron Fan |
#2
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If memory serves me, you will find two MCZ3001d IC's on the power supply board. These usually give the trouble you described. If there is only one the trouble is in the zero crossing switch circuit. Due to the shear weight of these sets I don't repair them anymore (back is bad enough now). The new IC's are MCZ3001DB. It is supposed to be an improved version. Buy three at least as the sets are picky about them. They don't blow up but if the set doesn't like one of the new ones it won't power up, just blink.
Use IC sockets when you replace them. The sockets make finding IC's the set likes easier to change. Some customers with those and the Mitsu 40's love em 'cause they are theftproof! Even the back of these sets are heavy! |
#3
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I hear you on the weight! If someone wants to steal this set, they had better bring a forklift! That said, I am not looking forward to moving it.
The set can't seem to make up its mind at first, but consecutively, after two or more tries, it's always coming up six flashes.
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Sony Trinitron Fan |
#4
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A big problem with that set was caused by customers setting up their stereo speakers on the sides. Of course the speakers had unshielded magnets and it would wreck the purity. More than one I went to check had the shadow mask damaged by the magnets. One customer had a small child use one of those old "Monster Magnets" on the face. It pulled the shadow mask into the phospher.
Didn't Sony make even a bigger set? I seem to remember a 42 inch. Hope that is just in my memory tho....... |
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From day one, I have had problems with color impurity in the corners of the picture. The only speakers within ten feet of my set are its own internal speakers. This baffles me, but never really bothered me much. I suspect subpar shielding on the internal speakers...but the discoloration isn't anywhere near where the drivers' magnets are. Maybe the picture tube is so gargantuan that its own geometry is fooling with the color somehow! To my knowledge, the KV-40XBR800 was the largest consumer television Sony ever made.
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Sony Trinitron Fan |
Audiokarma |
#6
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Update
After waiting about an hour, I turned the set on and it came up okay. The code that was flashing before I turned it on this time was seven blinks. I am now afraid to turn it off again! Is it possible that fluctuations or variances in the AC line during today's storms could have affected my TV?
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Sony Trinitron Fan |
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I wanted one of those beasts, but I never could find any supplier who actually SOLD them..And apparently, Sony played games w/availability of them. I guess because they we SO big & expensive. They reportedly made a 43" TV-studio monitor version that was never really offered to the general public...I THINK you could buy a small HOUSE for what that gotdang thing cost, too...
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Benevolent Despot |
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Quote:
for the floor & a backup & keep that stock level. Same with some other parts of the line. The other thing they did was forecast the sales. If they thought they needed 2000 sets for the month they would make say 1900. This kept prices & demand up & inventory low. When they had inventory on a set being dropped they sold them cheap. IIRC the 30" & 34" closed out at $400 + $600. Needless to say we grabbed some. 73 Zeno |
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Benevolent Despot |
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I never knew CRT sets that big existed until I saw this thread. Later on I thought, "wait, maybe it's a widescreen CRT". Googled it, nope, regular 4:3 screen. I can't imagine how much that would weigh, I found it difficult to move a 27" CRT set from one room to another.
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Audiokarma |
#11
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Sony Trinitron Fan |
#12
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Quote:
Charles
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Collecting & restoring TVs in Los Angeles since age 10 |
#13
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Talk! Or we put a SONY on top of you!!!
Maybe TWO! |
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A few years later I lifted that set my self and laughed at that memory of him grunting and struggling with a set that I could easily throw across the yard or carry three blocks without complaint...
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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 |
#15
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When I was in my early double-digits my back couldn't take the strain of merely lifting a 19" set from its stand. Something went out of whack, and I was walking with a limp for a few days. I fared better than H.B. Halicki though, who walked with a limp for the rest of his days after the filming of a climactic scene in the original Gone in 60 Seconds. Last edited by Jon A.; 07-02-2013 at 06:02 PM. |
Audiokarma |
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