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 Repair monitors Acer

استعرض الموضوع السابق استعرض الموضوع التالي اذهب الى الأسفل 
كاتب الموضوعرسالة
SAD
نائب المشرف العام


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

مُساهمةموضوع: Repair monitors Acer   الجمعة مايو 27, 2011 12:20 pm




Repair of monitors Acer.

Acer 7134

Monitor is not on, a fuse F601 (3.15A) is open.
Check of D601-D604, C605, C606, D606, Q601, R608, R621, R609, IC601.


Monitor is not on, a fuse F601 (3.15A) is good.
Check C601, ZD603, D608, C631, Q604, ZD605, R606, D65, D612, C609, C617, Q603,
IC601, Q603, IC602, Q607, IC603, SR701.


Output voltage of power supply is not good (+12آ, +90آ, +6.3آ).
Adjust VR601, check ZD603, Q604, IC601.


The power suply is on, but not raster. Sometimes
operates power supply unit protection. Check Q315, Q310, Q303, Q314, C308,
C317, C322, C330, C321, R332, Q315, Q310.


On the screen are the vertical band. Check of
Q301, D301, D302, C312, Q303, 302.


No synchronizing on lines. Check of R283, IC251.

Size on width is not good. Check of IC201, Q302,
Q303, Q314, Q311, R255, IC251.


On the screen horizontal band. Check of IC250 è
R277.


The one of the colours is bad. Check of IC101,
C112, Q106, Q107, C110, Q108, Q109, C107, Q104, Q105. The balance of white
possible to adjust VR105, VR106, VR107. Level of B and R possible to adjust
VR103 and VR104.


Not work a regulation of contrast. The IC101 is
bad.





الرجوع الى أعلى الصفحة اذهب الى الأسفل
SAD
نائب المشرف العام


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

مُساهمةموضوع: رد: Repair monitors Acer   الجمعة مايو 27, 2011 12:37 pm






ACER 7033D Horizontal Frequency
31-35kHz


ACER 7033D When you Turn off PSU.

R723 is defective.

ACER 7076/7176 Horizontal
Frequency 31-65kHz


ACER 7076I No Picture.

Cold
solder on the connector scans.
Elements of the Q311, Q312;
D707
faulty. And the Untitled Resistor .5 R next to J182 faulty.


ACER 7076 The absence of color.

Blue:
Q173 (BFQ 232A) Green: Q143 Red: Q113


ACER 7076N Completely Broken.

Cold
contact with the plug PSU. D707 and BP check. Q312 (East-West
correction) Check R458 (2.7 Ohm) line scan.



ACER
7156 Horizontal Frequency 31-62kHz







ACER 7156I Row Transistor Defects:

Q305 Replaced by BU2520AF

ACER 7176 Completely Broken. PSU is defective.

R6114 (100kOm) or R6113 is
defective.


ACER 7176I = ACER 7076 I

ACER
7176I No Picture. Vertical frequency is Not
synchronized.


S201 is defective.

ACER
7176IE Periodically Turn on and off the Image.
Line
scan Q306 and D306 Are Burned permanently:


3
kondentsatora S3950, S3951, S3952 (each 02/02 uF / 400V) in the Same and
Parallel resistors R3950, R3951 and R3953 Are defective.


ACER
7178I PSU is defective.


Q602,
Q603, R610, D701

faulty.


ACER
7067I Enables and disables:


In
the horizontal Oscillator S319 defective. (1NF)


ACTEBIS
M380NLD = MITAC M1564P


ADI
LM-1448 The picture is bad, the red color difference:


Video
output Transistors Q701 - Q703 faulty. Replaceable BFQ232 on the
radiator.


ADI
LM-1448 PSU switched on and off, at low pressure to the
board:


Interference
in the Security Turned on.
Help: kondentsator 22nF Between
"base" and "Emitter" Q903


ADI
MICROSCAN 4G (SM-5515G)


BP briefly switched off and then remains:

Line
Transistor Q809 and S815 kondentsator 220mF/25V defective. Q809
Replaced by BU2520AF


ALCATEL
8517 = ACER 7076I = ACER 7176I


ALPHA VIEW TR1764 = MAG MX17S




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Repair monitors Acer
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