Haier HL42XR1 service manual Power Supply Board failure check

Horiaontal/vertical bars	or Check	for local interference such as an electrical appliance or
pictureshaking	power	tool.

Televisionoutof control

Disconnect the television from power supply and 10 seconds later, connect the television to the power supply. If the problem

still exists, contact authorized after-sales service for technical

assistance.

9-2. Power Supply Board failure check.

heck (F1/3A) fo:F 12V'.71

NIY

Check

FI

and

peripheral

power

supply

Check

E33/470

p F/16V

for

5V

]

N

I

Tu:Fn on

the TV

set(By button

o:F

F1

is

damaged?

]

I

:['emote

cont:Fol)

I LDO(U10,U13,U16,U18,U19,

N

Y

I

Y

(

Were those

1

_

etc.)worked

normal?

x

I

yt

_

J

Y

Checksupp[y

p!wez"net

[

Check U6/MCU

fol

low FI

1'Power

supply(U7,

U9))

Check

U1 fo:F 5V

2'Reset

signal

output

3' Crystal

or the loader

is

in

LDO

was

damaged

J

short

circuit

Change

U1/MP1410ES-LF

or

] i check. ,47

D 17/S K34A-S

MA

I

It'snormal

but the

]

It'snormalvoltage isbuthighthe

1

I

voltage

is

Low

E33

was

damaged

"}

U1/MP1410-ES	or	or the loader is in	J
I CheckPinN°'4°f		II
change U1		short circuit

50