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Thursday, March 15, 2012

SIEMENS ELETTRA TV2451 CHASSIS INTERNAL VIEW.




















The chassis of the SIEMENS ELETTRA TV2451 is completely based on tubes except for the tuning stages.

The wiring of the chassis is in "air WIRING " fashion made.
Other brands were already using PCB or at least partly using PCB in that era of time.

TUBES USED:

- PCL86
- EF80
- PCL84
- PCH200
- PCF80
- PL500
- PY88
- DY87
- PCL85
- EF80
- EF183



2 comments:

  1. In the woods behind our house is a days-gone-by dumping ground. Old gas tanks, water heaters, mason jars, concrete blocks…whatever people couldn't or wouldn't haul off, it's there. And amongst all that crap is a totally intact old glass TV screen! The glass "funnel" on the back is broken off about 3 or 4 inches from the back of the screen itself. Otherwise, it's in great shape! It looks like a giant headlamp with rounded edges and it took me a while to figure out what it is (or was, I should say). My point is…I want to use it for a conversation piece, or art, or "something". But I don't know if it contains any dangerous chemicals/materials…or what to convert it to. Any advice is much appreciated!

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  2. Hi, What you're referring in your description is (Was since it's broken neck) the CRT Tube which contains chemical compounds at various levels to obtain the internal phospor screen layer.

    Aluminized screen may refer to a type of cathode ray tube (CRT) for video display, television picture tubes,and it includes a thin layer of aluminium deposited on the back surface of their internal phosphor screen coating. Light from an excited area of the phosphor which would otherwise wastefully shine back into the tube is instead reflected forward through the phosphor coating, increasing the total visible light output. The aluminium layer must be thick enough to reflect light efficiently, yet not so thick as to absorb too great a proportion of the electron beam that excites the phosphor.

    CRTs may contain toxic phosphors, NEVER touch a CRT’s phosphor coating; it is extremely toxic. If you break a CRT, clean up the glass fragments very carefully. If you touch the phosphor, seek medical attention immediately.

    Older color and monochrome CRTs may contain toxic substances, such as cadmium, in the phosphors,the rear glass tube of modern CRTs may be made from leaded glass, which represent an environmental hazard if disposed of.

    CRTs are disposed of either by shipping them back to the manufacturer or by discarding them locally according to local recycling law / rules / places. If you ship a CRT back to the manufacturer, put it in the shipping container intact. If you dispose of a CRT locally, follow the procedure prescribed by your safety officer.

    I'm not understanding the exact target which you intend to go for, relating it to this Tv you've found.........

    Try to restore it or if better donate the rest of it to people who does restoring , recovering it for parts / components safely.

    If you intend to rescue the cabinet for display purpose then remove the internals and remove safely the CRT, but would be better if you let it do by a qualified / experienced person if you feel unsafe.



    FRANK.


    ReplyDelete

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