17PW07-2 041111 V2 Diodes No Power

[mrdiy88]

Hi Folks. I have been testing a 32" Poloroid Tv with the 17pw07-2 041111 power board. I have noted that the diodes are not working as they should. I have ordered replacement 5a rated 100v schottky diodes to replace. Seems a common problem on these boards. Anyway I managed to find a 3a IN5408 set of diodes in the drawer. Is it at all possible to use these instead? I'd say not but just wanted to check with you guys. I also have some 6A P600A diodes from Maplin and wanted to check if I could use these. If not no worries, I will then have to sit it out until the mail man comes next week.

Thanks in advance

[jetadm123]

Re: 17PW07-2 041111 V2 Diodes No Power

No. 1N5408 are general purpose and cannot withstand the higher speed/frequency and will quickly overheat and fail. Stick with the Schottky diodes.

[mrdiy88]

Re: 17PW07-2 041111 V2 Diodes No Power

Thanks Jetadm. I assume this is the same case for the P600a 6a diode I have?

Thanks again, I guess I will be patiently awaiting the postman

Cheers

[jetadm123]

Re: 17PW07-2 041111 V2 Diodes No Power

I forgot to mention that the 1N5408 are rated at only 3A, well below what's required. As for the P600A, it's also general purpose and rated at only 50V, which is likely to result in the release of the "magic smoke"!

[mrdiy88]

Re: 17PW07-2 041111 V2 Diodes No Power

Brill, I await the postman in that case. Thanks very much