Shivaki STV-32LED13 Service Manual Download Page 12

Page: 12 / 14

１１

Image available but

accompanying sound not.

Start up and

check for

no noise.

Check if the

sound volume

can be set.

Replace the
mainboard

Check if
theCN16
connection wire
of mainboard is
well connected?

Replace the

connection

wire.

Is the unit

in mute

status?

Switch off the mute

with the remote

controller.

Replace the
mainboard

Summary of Contents for STV-32LED13

Page 1: ...STV 32LED13 STV 32LED13W STV 40LED13 STV 40LED13W Service Manual ...

Page 2: ...ents 1 Safety precautions 2 Technical specifications characteristics and functions 3 LCD structural diagram 4 Description of major components of LCD 5 Failure analysis 6 Simple adjustment 7 List of assemblies ...

Page 3: ...uman being High voltage exists in the unit Only the professional staff familiar to the service manual and board conditions of this unit can open the enclosure for repair Note This service manual should be read and used by the professional staff only Prior to any repair work the inspectors must read the safety precautions in this manual This symbol indicates High voltage danger Protect against elec...

Page 4: ...e service manual can be used as replacement 5 After the repair all the protection components should be checked for correct installation and the initial connection mode should be confirmed 6 Before the cover is closed check that there are no loose parts in the unit 7 After the repair perform the following inspections of withstand voltage and insulance to avoid electroshock Method of inspections Pul...

Page 5: ...ance 75Ω Video frequency VIDEO input impedance 75Ω input voltage 1Vp p 10 RGB input impedance 75Ω input voltage Y 0 7Vp p 3db YPrPb input impedance 75Ω input voltage Y 0 7Vp p 3db Audio input voltage 0 2 2Vrms Audio output speaker 2 8W impedance 8Ω Power supply 100V 240V 50 60Hz Standby power consumption 0 5W Aspect ratio 16 9 Operating temperature 0 40 Relative humidity 80 II Technical characteri...

Page 6: ...CE TV VIDEO input status selection button MUTE Mute on off DISPLAY The signal information SLEEP Sleep timing off MENU Menu selection exit CH Increase program number Display the previous menu CH Decrease program number Display the next menu V Increase volume Increase the item value Enter the menu rightward confirmation V Decrease volume decrease the item value 1 2 3 4 5 6 7 8 9 0 Number selection ...

Page 7: ...y DC line switching power supply unit Remote control board 5069782 IR signal receiving and transmission Button control board 5069783 button receiving and transmission Name Printed circuit board No Main Functions Mainboard A920327 Printed Board No TP S512 PB83 80V 480mA Is a board which is integrated with power supply LED driver and TV board Is an analog and digital TV control board which is suitab...

Page 8: ...daptive video de interlaces with edge oriented adaptive algorithm for smooth low angle edges 2 MStar 3rd Generation Advanced Color Engine MStarACE 3 automatic picture enhancement gives Brilliant and fresh Intensified contrast and details 3 High quality analogue to digital conversion circuit ADC self adaptation clamp and automatic gain control AGC 4 Horizontal linear and non linear zooming 5 Suppor...

Page 9: ...erminal board After a period of TV receiving the unit will be switched off Check if the TV signal is inputted properly under such phenomenon Click the MENU key of the remote control and check for correct selection of the timed shutdown item Check if it is caused by the computer connected If a computer is connected set the power saving setting of the computer to off No color image Check for proper ...

Page 10: ...e unit Ensure the correct input of power supply If the unit is in standby status remote control judgment Check if the currently received video signals are inputted correctly Press POWER button for startup Check the exogenous signal sources Judge if the unit is in blue background Switch it off and wait for 2 minutes Restart and see if it can be restarted Remove the cover and replace the mainboard T...

Page 11: ...0mA Replace the mainboard Check if the LT3247E LT3947E Modular led backlight is highlight Replace the LT3247E LT3947E Modular Replace the mainboard and data connection wire in sequence Check the mainboard CNK2 14 5V availability CNK2 J11 IR pulse signal availability Non availability of 5V indicates mainboard problem Non availability of IR indicates remote control board problem and replacement is n...

Page 12: ...noise Check if the sound volume can be set Replace the mainboard Replace the mainboard Check if theCN16 connection wire of mainboard is well connected Replace the connection wire Is the unit in mute status Switch off the mute with the remote controller Replace the mainboard ...

Page 13: ... etc Press EXIT button to exit the factory menu 2 Click the MENU button in the remote controller to display the menu Click button to select the CHANNEL item in the menu Its sub menu should display instantly Sound available but image not Check for proper input signals Ensure correct input of signals Replace the mainboard and see if image is outputted Replace the mainboard Replace the LT3247E LT3947...

Page 14: ...ed contents 5 Click the EXIT button to exit the menu Now the inspection to the unit is generally finished Ⅶ List of assemblies List of components for the complete unit LT3247E Modular A980336 Speaker T3513 4AU 8W 8Ω B137410 B1B2 Remote controller YC OD18 G347287 A1 Connect wire P000476J P1 P3 Power supply cable W715371 W1 LT3947E Modular A980340 Speaker T3513 4AU 8W 8Ω B137410 B1B2 Remote controll...

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Shivaki STV-32LED13, Service Manual

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