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 Repair monitors Daewoo.

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

مُساهمةموضوع: Repair monitors Daewoo.   الجمعة مايو 27, 2011 12:15 pm




Repair of monitors Daewoo




Daewoo CMC1418AD


Monitor is not on, a fuse F801 is open. Check of C806, D801, IC801.
Monitor is not on, a fuse F801 is good. Check R803, R804, R621, IC801.
Output voltage of power supply is not good. Check C813, C814, R615, IC801.
No pictures. Check Q805, Q806, IC501, IC801.
The one of the colours is bad. Check of IC801, Q821-Q824, Q811-Q814,
Q801-Q804.
Not work a regulation of contrast. Check of Q401,Q402, VR401, VR402, R403,
C813, IC801.
Not work a regulation of bright. Check of D113, C123, VR501, VR502.
No synchronizing. Check of IC502.
No framing. Check of D321, IC101, Q201, Q202.
The size on height is not in rate and is not adjust VR204. Check of IC101,
Q203-Q205.
No synchronizing on lines. Check of D131, IC101, IC103, C104-C106, C111,
R105, R112.
The pictures is removable on width and is not adjust VR101. Check of IC103,
C181-C183, R184.
No high voltage. Check of Q104, D107, D108, C116, C117.
Vertical line. Check of L105, C126.
Size on width not in rate and is not adjust VR103, VR110. Check of IC202,
C212.
Shift on vertical and is not adjust. Check of C231, VR112, Q214, Q215.
The size on vertical is not adjust. Check of IC101, Q203-Q205, IC201.

Daewoo CMC 1424S/1425S


Monitor is not on, a fuse F001 is open. Check of D001, C001, DP001, RP001,
IC001.
Monitor is not on, a fuse F001 is good. Check T001, D007, R003, D006, Q001,
Q002, IC001.
On the screen is colour heel. Check of DP001, PR001.
On the screen is horizontal band. Check of IC301, Q401, Q402, IC401, C407,
R415, R416.
Not work a regulation of bright. Check of R201, D201, C201, VR201, R203,
R216.
Not work a regulation of contrast. Check of Q202, V202, R209, R214, VR202,
IC801.
No synchronizing on lines. Check of IC301, IC501, C505-C508, V501,
R508-R510.
Vertical line. Check of C317, C421.
The size on height is not in rate. Check of C515, C517, C313, C317, C421,
Q401, Q411, Q412.
The pictures is removable in vertical. Check of Q404, Q405, VR402.
The pictures in up and bottom is bad. Check of C406, C407, C409.


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

مُساهمةموضوع: رد: Repair monitors Daewoo.   الجمعة مايو 27, 2011 12:47 pm




DAEWOO
CMC1501BA1 No Picture. Progressive and there is high.
No sync.


Q201,
C202, R201

faulty.


DAEWOO
CMC1502 No high VOLTAGE.


Exotic
bending legs Sub-D input.


1:
R, 2: G, 3: B, 4,6,7,8: Masse, 5: V-Sync, 9: H-Sync


DAEWOO
CMC1701 Horizontal Frequency 31-64 kHz


DAEWOO
CMC1701 PSU Whistles. Horizontal scan and a Preliminary
controller is defective.


Transistor
IRF731 defective (replace in IRF730) to Measure the Funded Choke T507
(about 2 mg) Horizontal Transistor Q536 is defective (zameyaem on
BU2520AF) Remove R540 (4.7 OHM) 2.2 Om/0b5V Parallel to the R539. Kondentsator
10 mF/25V


Plus
at 5 V (Bridge J617) from minus to Plus S647


DELL ULTRASCAN 17FS-EN =
MITSUBISHI TFS 6705


DIAMOND H566-Circuit in the line scan and the PSU is defective.

Line
Transistor Q801 is defective (replace at BU2520AF) Reason: Bad contact
on the P802.


PSU:
Q901 is Replaced by IRFBC30. Defective items:


IC
U901 (3842), ZD901 (20V), R909 (1910 kom), R908
(100 Om), R10 (10 Om), D903


DIAMOND 20 "= SHAMROCK
SRC2002




DIGITAL VRC20-HA bottom of the Picture missing.

PSU: S949 defective (100
mF 25V)



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عدد المساهمات : 2369
تاريخ التسجيل : 16/06/2010
العمر : 56

مُساهمةموضوع: رد: Repair monitors Daewoo.   الإثنين مايو 30, 2011 6:06 am




Daewoo


Modelo

Defeito

Solução


CMC1418AD

Sem
Imagem.


Q805, Q806, IC501 e IC801.

CMC1418AD

Sem alta
Voltagem.


Q104,
D107, D108, C116 e C117.


CMC1418AD

No high voltage.

Check of Q104, D107, D108, C116, C117.

CMC1418AD

Sem imagem.

Check Q805, Q806, IC501, IC801.

CMC1418AD

Sem
trama.


Check of
D321, IC101, Q201, Q202.


CMC1427S

Não da
video, tela toda escura. Ligando ok.


Queimado
o ci de video CVA2415T. Trocado por um LM2416 e voltou a funcionar.Porem logo
depois queimou. Precisa ser colocado o original cva2415T.


CMC1427X

Liga mas
não da video.Ficou tentando abri o horizontal e depois foi fechando.


Trocado o
transitor horizontal original THD200FI. Colocado no lugar um do monitor
Samsung 2SC5149.


CMC1427X1

monitor
quando abre o brilho a imagem fica saturada e imagem some


normalmente
este defeito esta no circuito de brilho procure por resistores abertos de
valores alto tipo 2m2.




_________________

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Repair monitors Daewoo.
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