——Power ChartPower Chart
——Power Units Problem Solving Power Units Problem Solving
——Display Units Problem SolvingDisplay Units Problem Solving
——Audio Units Problem SolvingAudio Units Problem Solving
——Functional Units Problem SolvingFunctional Units Problem Solving
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Page 4
HKHK--T.MSTV59V08X T.MSTV59V08X Power ChartPower Chart
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2.2.1 Power Units Problem Solving1 Power Units Problem Solving(Mainboard can not boot.)(Mainboard can not boot.)
In stand-by condition,
Check main board U11 3pinWhether there is 5V?
Checkmain board
U11powerSupply
Net
N
N
Check U10 Power
Supply Net
Y
Check main board U10 3pin
Have 1.2V ?
Y
Y
Check main board U4
2pinhave 3.3V ?
Y
Normal
boot
After power on,
Check U3 2pinhave 1.8V,
Test U87pin have 12V , Test L14
have 3.3V?
Check U4Power
Supply Net
YN
N
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Check the availability of short-
OK
circuit power supply
Page 6
2.2 Display Unit (black screen)
Change the LCD,
check if it is ok
Flickering or
Black screen(Back light on)
Check the connection of Driver
Board Cable connect well
N
N
Change
LCD
Y
Check the network output,
CN3cable socket
Works normal
Y
Check the software
match able
Y
Check U5
Power supply and clock
circuit chip LVDS output
pin is short circuit,
or open-circuit ?
N
Re-update the software
Check LCD power
VCC-Panel is OK ?
CN4voltage is ok?
Q4output voltage
is ok ?
N
Change the circuit
Change driver
board cable
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2.3 Display Unit (black screen)
Black screen
Main board CN31,2pin
Have or not 12V?
Check the Inverter power supply
CN3 4pin output voltage is over 3.3V
NY
Maintenance power
Y
Check power supply circuit
Inverter broke or
bad wire connection
N
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2.4 Audio Unit (no sound)
No sound
If Any audio signal input or
amplifier power supply normal
N
Check the Volume,
Y
MUTE settings
YN
CN8no signal output
Check
External audio
equipment
Amplifier power
supply circuit
Reset
Y
Check
external
Speaker
Check amplifier
power supply circuit
Power supply
normal change U9
N
Maintains
U5Peripheral
circuits,change
U5
N
U8(YD1517)1/9
Pin have signal input
NY
Check U5
havetheaudio signal output
Y
Check U5& U8
Connect part
network
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N
2.5 Function Unit(ATV broke down)
TV no searching
/no image
Check External RF
signal input
N
NO.3/10/18/23pin of T1
Check+3.3V net
Check the Turner
have 3.3V
Y
Check Tuner No. 6,7 pin
have I2C data
Y
CheckTunerNo.9,10pin
have IF signal
Check external circuit
of Tuneris OK?
Y
N
NY
N
Check
external
RF
equipment
Check
U5connect
network
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Change
Tuner
Repair
its
outer
circuit
Check pull-up
voltage of I2C
network is
normal
Page 10
2.6 Function Unit (ATV with the image but no sound)
TV no sound only picture
Check the sound of PC& AV
See “NO SOUND”
repair guide
N
Y
Change U5
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2.7 Function Unit(PC)
PC
Image not
In the middle
Carry out
auto-adjust
operation
Color
R.G.B input signal
works well
YN
Reset the
system settings
cast
U5
Check VGA
circuit
connection
Check VGA
input circuit
Image
shakes
VS,HS signal
Stable and well
YN
OSD settings,
Or input mode
not correct,
Reset it
Check VS.HS
Circuit
No signal
Check
U10circuit
connection
Check VS.HS
Circuit
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2.8 Function(SCART,VGA)
RGB、SCART
Miss color,
color cast
U5 R.G.B
Input signal is normal
YN
The system is incorrect
re-set settings
SCART
Check SCART R.G.B
Input network
All no signal
SCART socket
contact is ok
Check
U5
Power supply
RGBno signal
Check U9
peripheral circuit
Change U9
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2.9 Function Unit (HDMI)
HDMI
No image
Check hdmi signal
Y
Check the connect network
R103,R104,R105,R106,
R107,R1081,R109,R110to
U5
HPD & I2C
N
Check HDMI
and the input
network
Check HDMI
connection
Y
Check HDMI and
input network
Image,
no sound
Check If the sound
is ok in PC
N
See the repairs
guide “No
Sound Solution”
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2.10 Function Unit (YPBPR)
YPBPR
YPBPR
Color cast
If have a dvd
Check U12peripheral circuit
Check U12
peripheral circuit
Check video circuit of U12and
U5connect network
No signal
Check U5peripheral circuit
and crystal circuit.
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Page 15
3KEY BOARD AND REMOTE BOARD.
3.1KEY BOARD.
View of copper SIDE(top/bottom)
3.2REMOTE BOARD.
View of copper SIDE(top/bottom)
Page 16
4.THE CIRCUIT
OF MSTV59V08
Page 17
5
AMPLIFER
4
3
2
1
DD
AMP_AUOUTL0
AMP_AUOUTR0
CC
AMP_AUOUTL0
AMP_AUOUTR0
+12V_AMP
470uF/16V
+
EC6
C95 1u
C108 1u
AP_MUTE#
+
EC7
100uF/16V
U8
1
9
7
8
3
INV1
INV2
VP
M/SS
SVRR
GND
GND
GND10GND11GND12GND13GND14GND15GND
2
5
18
OUT1
GND17GND
OUT2
16
4
6
YD1517
470uF/16V
+
EC10
+
EC11
470uF/16V
SPEAKER_LOUT
SPEAKER_ROUT
HEADPHONE INTERFACE
SPEAKER_ROUT
R131
1.5K
R134
1K
C98
820pF
VBL_CTRL
R139
10K
2
C110
2.2uF
+12V_AMP
R141
10K
3
Q13
2N3904
1
R140
+12V_AMP
R136
10K
AP_MUTE#
3
1K
Q14
+
2N3904
1
R157
3.9K
EC13
100uF/16V
2
R129
1K
PHONE L
R130
1.5K
6
7
123
LOUT
123
J-B2.54-4P-L
CN8
5
CON9
PHONE
4
PHONE R
ROUT
4
C99
820pF
SPEAKER_LOUT
BB
1.5K/30R改成耳机RMS=81MV测得
AA
Technology
5
4
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Title
SizeOrganizerRev
Custom
3
Date:Sheetof
2
TSUMV29
ZHUZXV1.0
19Saturday, August 24, 2013
1
Page 18
5
4
3
2
1
L2
C831
30pF
L804150nH
L-0603
L803150nH
C838
L-0603
10nF
L6
C828
C10
tf1p22tf1n21tf2p20tf2n
dvdd10xtal_o
dvss11ifp
C83 100nF
VDD3V
C840
30pF
100nF
19
18
avdd
17
2v
16
avss
15
cp
VAGC
14
vagc
VOP
13
ifp
V2
VON
12
24
23
U7
25
gnd
avdd
rf_hp
1
rf_lp
2
open_d
3
avdd
R620D
4
det1
5
det2
6
sclk
sda7xtal_i
8
9
3
12
Y2
16MHZ
R958 1.5RC96
C11
C829 100nF
C94 330pF
C14
R957 1.8K
VDD3V
C8306n8F
C16R8
+3.3V_Normal_1
+VDD3V Input Ripple must be under 30mVp-p
T4
67
RF_IN
1
NC/TUNER_CON
DD
Single ended:75ohm
23
45
L-0402
Add Notch Filter C841=68pF,C837=47pF,L10=220nH,L18=220nH,C835=120pF,C96=150pF
NOT Add Notch Filter C841=10nF,C837=10nF,L10=NC,L18=NC,C835=NC,C96=NC
180nH
3n9H
L16
L13
L-0402
D13
BAV99L
68pF/10nF
C841
3
1
2
L10
220nH/NC
L-0402
C835
120pF/NC
C83747pF/10nF
L18
220nH/NC
L-0402
150pF/NC
RF ESD/S1 Filter
(For EN55020 standard)
中频电路选项2)通用的
CC
与其他方案搭配可采用这个简单的
VOP
VON
TUENR
时的模块电路
R954
100R
R960
100R
R955
NC
IF
IF-IN+
IF-IN-
滤波电路
C842 1nF
L19 22nH
L-0402
C839 4p7F
L247nH
L-0402
C8344p7F
L98n2H
L-0402
C83610pF
VDD3V_RFB
C15 10nF
C23
1uF
TU_SCL
TU_SDA
C22
100nF
VDD3V_RFA
Z = 1k@100MHz,> 400ohm @400MHz,0.25 Rdc 0.5ohm,Idc >300mA
+3.3V_Normal
C847
C844
10u
5.1R/5R6
VDD3V_RFAVDD3V
L11
VDD3V_RFB
L12 0R
VAGCTUAGC
R956 10K
C832 100nF
0.1u
+3.3V_Normal_1
Bead
L14
C843
C845
C846
10u
0.1u
EC20
100p
470uF/16V/LOWESR
Tuner Connector
CD使用T-3SP5I2-36时,C364、C367、C359和L32
上件,
C357=0.1uF,C365=0.1uF,R313=33R
BPF FOR 38.9MHz OR 38MHZ
C82
C364
R1211UH\33R
C359
R1271UH\33R
C367
NC/56pF
C86
NC/180p
C93
NC/56pF
R1222.2UH\51R
L32
L801
56pF/100nH_10%
R1282.2UH\51R
BB
IF-IN-
C357R313
C84
0R\0.1UF
Q值:15(MIN)
BPF_IN
C359=180P,FOR 38.9MHZ OR 38MHZ(PAL)
C359=100P,FOR 45.75MHZ(NTSC)