Monitor Nokia 447X

Geräteart : Monitor
Hersteller : Nokia
Gerätetyp : 447X
FCC ID : IEY447X
Kenntnis : Minimale Kentnisse (Ohmsches Gesetz)
Messgeräte : Multimeter, Oszilloskop
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Problem: Monitor lieferte im laufenden Betrieb plötzlich eine vertikale 3mm hohe weiße Linie. Hab die üblichen Verdächtigen eliminiert (Kabel, Grafikkarte).

Hab hier im Forum folgenden Text gefunden:

Nokia 447X with hv but no horizontal sweep. Yoke is OK. Aside from bad yoke connections, and bad solder_on the small board inside the cover_on the back of the yoke, other common problems are FET# T27, resistors R195, R205, R224, and shorts in centering transformer M3. To replace M3, you need to read off its part#, which begins with FM2525 or FM2565, etc. There are several M3's, and your Nokia model number is incomplete (is it 447X058? 447X158? 447X258? etc), so I can't tell what you have, but be sure you order the correct M3 type from Nokia, or (in the US) from Trillium, 919-829-9747. If the board uses those small thru-hole rivets for its 'vias', these rivets may be breaking loose from the repetitive heating/cooling cycles of running, and may all need resoldering,_on both sides of the board, or these problems can recur. I replaced M-3 (orderd from Trillium) T-27 ( P-channel Mosfet) and R224? a 47 ohm? resistor. This restored the raster but when I connected the BNC cables, screen would go blank. As it turns out the V and H BNC cables needed to be swapped, even though connected normally_on a Qvision 150 the Qvision would work fine. Also the T-27 I replaced. NTE2372 was supposedly not compatable. I recommend ordering it from Trillium
Nokia 447X I need a replacement part number for M3 a driver transformer in the deflection. Number_on the transformer is FM2525 5373. The part number_on the small transformer IS the part number. I had the same thing_on a FUJITSU-ICL monitor (even SALORA). Try all these brands (monitor may be called 447*).
Not work a regulation of bright to VR501. Check of VR501, VR101, R507, Q501, D501, D502, C501, C503, R501.
Not work a regulation of contrast. Check of Q187, R198, VR191, Q186, C189, D190.
Not work a regulation of contrast. Check of Q203, C108, D501, Q501, D502, D503, C501, IC101. No high voltage, no raster. Check of Q408, C434, C413, D408, IC402, Q415, Q404, C418, C422, C423, D406, D407, Q403. Vertical line. Check of C420, C421. The size of picture is not adjust. Check of Q414, VR404, C409, C410, C421, Q405-Q407. Horizontal line. Check of R304, IC301. The pictures in up and bottom is bad. Check of C402-C406.
Not work a regulation of contrast. The IC101 is bad

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