Samsung PS50Q7HG help identify diodes

[Grunder]

Hi Guys, if you could please help me identify these diodes. I have searched endlessly with no joy.

The fault area was found (photo3) whilst checking for shorts.
The faulty diodes: zener diodes 5024 5023 5017 & 5016 (previous repairer)
1x 4.5 zener 1x 5.8v zener 1x 1n4148 1x burnt

The good diodes: zener diodes 5022, 5021, 5019, & 5018. (photo 4)

The zeners have orange, brown, & green bands (3.1v?) (from the cathode reading left to right. (have searched for col band identity/ nothing specific)

The F46F diode D5024 (incorrectly marked?) next to the faulty group didn't measure faulty but was removed for a better check. (gone awol/ suspected missing in a clean up...

I have looked on my salvaged boards, and found similarly marked diodes (F46
A, and with every other numeral & letter but no F46F)

The set was tripping with the shorted diodes in, BUT, runs with them removed? protection?

Please can you help me identify these diodes (both D5024 & the zeners).

[tw2005]

Re: Samsung PS50Q7HG help identify diodes

i'm thinking D5024 will be the same as D5023. I also think the code is F4, the bottom 2 characters will be the production code, they also look like fast recovery rectifying diodes.

http://pdf1.alldatasheet.com/datashe...TC1/FRS1G.html

[Hamie]

Re: Samsung PS50Q7HG help identify diodes

Have you seen in this video?

https://youtu.be/R5mYKAgMoB4

[Grunder]

Re: Samsung PS50Q7HG help identify diodes

i'm thinking D5024 will be the same as D5023. I also think the code is F4, the bottom 2 characters will be the production code, they also look like fast recovery rectifying diodes.

http://pdf1.alldatasheet.com/datashe...TC1/FRS1G.html

Thanks tw2005, was able to lift one off another board, and get the set going.

[Grunder]

Re: Samsung PS50Q7HG help identify diodes

Have you seen in this video?

https://youtu.be/R5mYKAgMoB4

Excellent, now why couldn't I find that!? exact symptom, mine was just the upper set of diodes.

Fitted 3x 36volt zeners, and the F4 that tw2005 suggested, and hey bingo! up & running. To think of the time wasted trying to identify the components, whilst the answer was right here! literally a half hour versus half a day. Gracious Amigos.