Repair guides and support for your Samsung TV.

671 Questions View all

samsung ps50c96hd tv. won`t turn on ,Faulty psu?

Another ongoing project is my 'samsung PS50C96HD. Symptoms are Got standby light but no picture or sound it wouldn`t go on

i opened the back and checked powerboard first,it had 3 bad capacitors so i replaced them (showing with red tops on photo ) Then put it back in tele and first checked the Va and Vs for voltage ,The Va read 63v which was correct then checked the Vs ,result is nil volts .according to the chart it says "replace psu " so i went no further. Not being able to buy one yet is there anything i should check as in transistors ect so i can replace, if so which ones will i be looking for to check so it will be cheaper to fix ,any ideas guys i will appreciate thnx.

Capacitors changed are

.1= cx411 on the board.... 25v..1000uf.

.2 = cx410 on the board..25v..47uf.

.3 = cb402 on the board...10v..1000uf

Block Image

Block Image

Block Image

Block Image

Answered! View the answer I have this problem too

Is this a good question?

Score 1
Add a comment

2 Answers

Chosen Solution

@moggy01 check the components as they are listed in the service manual point 3 and 4 see what you get with those. This video may also assist you with the FET's

Block Image

Was this answer helpful?

Score 1

Comments:

Thankyou @oldturkey03

What confuses me is i cannot find the 1cx803-4-5-6-8 numbers on this board in the No.3 part of diagram and also icb802-db864-fb801 on part 1 of diagram even though i looked over the board fully with magnifying glass and a light 3 times ,i looked up the service manual for this tele and went through it and the pictures showing the board are showing a different board which i take is compatable to mine .Is there any numbers that cover the same ones in steps 1 and 3 for my board so i can check or show me from first picture were they will be with the numbers thnx ?

by

Do you have a board number for your DYP-50W2 PS. I am sure there will be service manuals for that board:-)

by

Add a comment

Hello and thanks for the reply @oldturkey03 oldturkey03

The only clearer markings that i hope show the board number is in these new pictures,I do appreciate the help,

Hope i am correct with the numbers specially the BN4400160A (50")

Block Image

Block Image

Thankyou.

Was this answer helpful?

Score 0

Comments:

UPDATE.

I had to replace capacitor on ysus board ref c5709 at top right of board just under the heatsink near fuse, as it was swelled and also the one on xsus board c4712 at top left of board near fuse as that was swelled. also I have connected the leads from all other boards to power board and now have correct voltage at va and vs and find I have sound but no picture also checked fuses all ok . any other help will be great @oldturkey03

by

Any more feedback for this fault you guys as still not sorted thnx

by

Add a comment

Add your answer

moggy01 will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 1

Past 30 Days: 8

All Time: 184