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 Repair monitors NEC

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عدد المساهمات : 843
تاريخ التسجيل : 16/06/2010

مُساهمةموضوع: Repair monitors NEC    الجمعة مايو 27, 2011 1:01 pm


Repair monitors NEC





NEC
1531UMB closure of the line scan.


Q505 is defective IRF9620

NEC
3D (JC1404) Frequency: 15,5-38 kHz


NEC
3D High-level on the line focus.


Line
transformer is defective. Is replaced by


König
MAT 33117


NEC
4FG (JC1531VM) Frequency: 27-57 kHz.


NEC
4FG size images are not stable.


Line
18 in L551 , L552 and S557 are defective. Probable cause: S561


NEC
4FG not stable brightness. G1 voltage is not stable.


S793 defective mF/16V 470.
Electrolyte fell deeply hurt some rad tracks.


NEC
4FG No picture.


R847 (CO regulation trimmers +12)

D504 (ZD 9.1 V), D508 and Q511
are faulty.


Reason:
faulty S561 .


NEC 4FG One of the colors strongly dominates.

R780 (270 kom), R780 R, R780
G, R780 B may be defective.


NEC 5D = JC-2002VMED-1

NEC 5D line
scan is defective.


Q550 is defective HPA150, Q530
2SK758 replace defective in IRF730.


NEC 6FG Frequency: 27-79 kHz.

NEC 6FG Totally not working.

Q581 2SC3998 defective. Q566
2SK758 replace defective in IRF730.


NEC 6FG Totally not working.

R570 is defective 2.2 ohms.

NEC 6FG Horizontal stripes on the image.

PSU: R602 defective
(always burns).


CR601 is defective.

NEC 3V Frequency: 31-50 kHz.

NEC
JC-1535VMB inappropriate colors. Horizontal stripes in
the image.


LM1203
chip color defective.


NEC1402
Frequency: 15,5-35 kHz.


NEC1402
No picture. Filament voltage keniskopa absent.


R501 is defective 100 ohms. S503
defective 100mF/10V


NEC
2A (JC-1403) Frequency: 31,5-35 kHz.


NEC
2A (JC-1403) No high voltage.


S5S1 defective.

NEC
JC1531VMB No high voltage.


Q554 , Q517 , D518
and R540 are faulty.


NEC
XE15 (JC1539VM) Frequency: 31-65 kHz.


NEC
JC1539 size in the horizontal is not configurable.


Q5E4 defective 2SD1763F.

NEC
JC1734VMB Totally not working.


2SJ306
and line transistor 2SC5047 faulty.


NEC
MULTISYNC XE15 PSU is defective.


Q6C1 , ZD6E9 and R6C9
are faulty.


NEC
MULTISYNC 5FG Image is not stable.


S831 is defective.

NEC
MULTISYNC XE21 = NEC MULTISYNC XE17 (JC-1733VMB)


NEC
MULTISYNC XE21 brightness is not stable.


PC:
R906 is defective.


NEC
XE15 Totally not working. PSU is defective.


Q6C1 , R646 (1 Ohm), ZD6F4
(18V), IC6C3 and R6U8


(470
ohms) are faulty.


NEC
XE17 Totally not working. LED lights.


Q7A6 defective 2SA933.

NECKERMANN
D1560 = USFO D1560


NIXDORF
BA88 = NEC JC1402



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Repair monitors NEC
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