Sony KLV32U300A starts up then shuts down

[Admirality]

Sony KLV32U300A starts up then shuts down with ared led blinking twice with a pause then again the same over,ould someone pls give advice on where to lookfor rhe error

[dick_barton]

Re: Sony KLV32U300A starts up then shuts down

Are you certain it's KLV32U300A and not KLV-32V300A

The led fault code for KLV-32V300A is attached

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

Thanks Dick,it is definitely klv32u300a

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

And thanks for your input,much appreciated

[dick_barton]

Re: Sony KLV32U300A starts up then shuts down

Can you post nice sharp photo's of the circuit boards
Have you taken any voltage readings?

[nomoresonys]

Re: Sony KLV32U300A starts up then shuts down

Try test number 3 below, be sure to post the pin label/description, number and voltage.

[budm]

Re: Sony KLV32U300A starts up then shuts down

Service manual.

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

Hi Dick no i hav'nt checked the voltages yet and i will post pics of the circuit boards,yesterday i switche the tv on and it actually came on for 5 minutes and switched off automatically but after that the same on off occured again.what can you make of that

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

Does it sound like the power supply or could it be on another board

[nomoresonys]

Re: Sony KLV32U300A starts up then shuts down

It's just speculation until you do the tests.

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

Thanks nomoresonys

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

Hi Dick,i checked voltages on standby and all seem ok but when i removed one plug from power supply going to the main board then green light stays on which indicates that the fault is on main board but the led flashes 2 times still which according to the chart of blinking codes should indicate that the psu is the culprit,how do i post pics of the boards on here

[dick_barton]

Re: Sony KLV32U300A starts up then shuts down

Post pictures by clicking on "Go Advanced" and then I add them one at a time.

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

Hi Dick i did go on advanced and added the attachments but how do i post them,when i add attachments on email i have no problem but on here i just dont seem to get it done

[dick_barton]

Re: Sony KLV32U300A starts up then shuts down

RJ gives an explanation on how to add attachments

https://www.badcaps.net/forum/showpo...18&postcount=4

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

Sorry it looks like i cant add attachments yet it states invalid post

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

Ok i finally managed to attach the psu and main board

[dick_barton]

Re: Sony KLV32U300A starts up then shuts down

Can you give the voltages read on CN201, CN202 & CN203
eg
CN201
Pin 1 GND
Pin 2 GND
Pin 3 PWR_6V = xxV
Pin 4 PWR_6V = xxV
Pin 5 GND
etc for all pins

[Admirality]

Re: Sony KLV32U300A starts up then shuts down

CN201 Pin 1=GND 2=GND 3=5.63V 4=5.83V 5=GND 6=GND 7=5V 8=5V 9=GND 10=GND 11=14.60V 12=14.60V 13=GND 14=32V

CN202 Pin 1=0.2V 2=0V 3=4.1V 4=GND 5=GND 6=GND 7=4.1V 8=4.1V

CN203 Pins 1-5=0V And 6-10=24V