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Replace fuse. If the problem persists, refer to Flow 

chart No.18 "Fuse is blown".

Is primary circuit part leaking or short-circuited?

(L901, D901, T901, IC901, etc.)

Are voltages on AT40V, AT14V, AT5V and AT-8V normal?

Check rectification circuits of secondary side circuit.

Check power failure detection circuit (Q513 and IC502).

Is IC501 pin 1 at "H" level?

Power does not turn on.

Is fuse normal?

Is R903 normal?

Is AT5V line normal?

Fuse is blown.

Is primary circuit part leaking or short-circuited?

(L901, D901, D902,D903,D904,T901, Q901,IC901, etc.)

Check the presence or absence of rectifier diode and 

short circuit in the rectifier of the secondary circuit.

(D9001,D9003,D9007,D9009,D9010,D9011, etc)

Power does not switch from "OFF" to "ON".

Is AT5V normal?

Is IC501 pin 94 at "H" level?

Is ST_5V (STNDBY 5V) output?

Is IC501 pin 4 at "H" level?

Is P-CON-H line at "H" level?

Are AT_14V and PC_5V (1) output?

Check IC501 peripheral circuits.

Refer to Flow chart No.17 "Power does not turn on".

Check IC501 peripheral circuits.

Check ST_5V SW circuit.

(Q9008, Q9009, etc.)

Check IC501 peripheral circuits.

Check IC508 peripheral circuits.

Check AT_14V line and PC_5V (1) circuit.

Case 1

Case 2

YES

YES

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YC   SEP

R G B         I N

X TA L

T V P 5 1 4 6

V B I   S l l c e r

G P I O 4 0

3 7 0 1

   A D V 7 3 2 2
V I D E O     E N C .

H , V, B L K

Y, C

Y, C

R / V, G / Y, B / U

R / V, G / Y, B / U

P R O G R E _ H

G L _ C S

G L _ S D I / R X D 2 B

G L _ S D O / T X D 2 B

G L _ S C L K

G L _ R S T

G L _ B U S Y

G L _ D L

V M   O U T

J 5 4 0 2

G P 1 0 4 1

G P 1 0 5 6 / R X D 2 B

G P 1 0 5 7 / T X D 2 B

G P 1 0 4 4

G P 1 0 4 2

G P 1 0 4 3

G P 1 0 4 5

V M     M C U

I C 5 4 0 1

FRONT

Austraria

R H - i                        W J Z Z Q

R H - i X A 8 9 8 W J Z Z Q

D5003

R5002

D2704

R2723

NC

NC

HDD

HDD

HDD PLAY STOP

DVD REC

DVD REC STOP

DVD PLAY STOP

R5001

SW5002

CH (-)

SW5001

CH (+)

Q1701

Q1702

33

34

NC

D8020

L2_VDET

L2_VDET

SYSTEM_I(H)

SYSTEM_DK(H)

SYSTEM_I(H)

SYSTEM_DK(H)

Q3705

Q3704

Q3703

Q3707

Q3706

Q2204

Q2203

28

L2_VDET

Q2209-Q2211

L2_VDET.

R2706

R2704

R2705

J2602

J2602

CN6601

224 OF IC7508

R6523

R6520

R6538

R6537

9

R6530

R6534

12

R6531

R6532

R1505

Q6515

Q6514

Q6512

R6544

Q6513

PB

PR

1. The voltages at test points are measured on the

stable supply voltage of AC 220-240V.  Signals are
fed by a colour bar signal generator for servicing
purpose and the above voltages are measured with
a 20k ohm/V tester.

RESISTOR
1. The unit of resistance “

Ω” is omitted.

(K=k

Ω=1000 Ω,  M=MΩ).

2. All resistors are 

± 5%,  unless otherwise noted.

(K= 

± 10%, F= ± 1%, D= ± 0.5%)

3. All resistors are 1/16W,  unless otherwise noted.
CAPACITOR
1. All capacitors are 

µF,  unless otherwise noted.

(P=pF=

µµF).

2. All capacitors are 50V,  unless otherwise noted.

PARTS MARKED WITH  “å”  (