Phillips 42PFL5432D/37 Chirping and No Picture

[Mr Bill]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

P6ke120a

[anagy]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

Do you have a pn# of the two diodes you replaced?

[dudubox]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

Just make sure it has a diode check function for it. I'm sure even the cheapest multimeters should have that function. I pulled up my photos from my cousins power supply and the 2 diodes we changed we ZD902 & ZD904

Thanks so much. I have a Philips 42pfl5432d/37b with the same problem, and after I changed the 4 caps and only one diode and the tv is back working like a charm!

[ben7]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

Wow, I am surprised this is working, you guys decided to replace ZENER diodes with regular diodes? They are marked ZD not D on the board, so must be zener diodes. Or am I missing something?

-Ben

[Jimbo1066]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

My Philips did the same thing and thanks to y'all's help it is back up and running. I'm using the Radio Shack diodes; is there any long term risk if I keep those in?

http://www.radioshack.com/product/in...ductId=2062575

[casiasjs]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

My wifes friend was throwing this TV away did every thing you have suggested and it works wonderfull. New TV for $13.00 GOOD JOB.

[tw1ztid]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

It works beautifully!

[Mr Bill]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

They have no FR or UF at radioshack, they don't even carry the 1N4007. Mainly 4005 and numbers a little lower.. If any of those would be safe i'd be willing to try. I'm looking forward to hooking it up!

http://www.radioshack.com/product/in...ductId=2062575
This is what he got. Its not correct but truth be told he used the tv until the correct digikey ones were delivered.

[tw1ztid]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

They have no FR or UF at radioshack, they don't even carry the 1N4007. Mainly 4005 and numbers a little lower.. If any of those would be safe i'd be willing to try. I'm looking forward to hooking it up!

[Mr Bill]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

http://search.digikey.com/us/en/prod...ACT-ND/2770358 This is what we ordered.

I "think" tom was referring to if you do the radio shack diode to see if it works.

[tw1ztid]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

I'll let tom66 clarify what he meant because I'm no mind reader. He is in the UK so he is probably sleeping now.

BTW, all those parts list selected above require a minimum order in the 1000s.

lol I noticed. I found the single order equivalents.

Thanks for all your help.

[retiredcaps]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

UF4007 What he meant?

I'll let tom66 clarify what he meant because I'm no mind reader. He is in the UK so he is probably sleeping now.

BTW, all those parts list selected above require a minimum order in the 1000s.

[tw1ztid]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

http://parts.digikey.com/1/parts/419...007-e3-54.html

UF4007 What he meant?

Edit: Also would the standard 1N4007 work for it? (JW)
http://parts.digikey.com/1/parts/719...-p6ke120a.html

This is currently in it.

[tw1ztid]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

I'll start searching for FR4007 thanks!

[retiredcaps]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

D912 is out of range, and .43

Okay, time to order parts. Remember tom66's suggestion and you might want to get 4 just in case they blow for some other reason. I'm guessing these diodes should be under $1 each?

[tw1ztid]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

D912 is out of range, and .43

it's good.

[tw1ztid]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

D925 is good. What about D912?

BTW, there is no such thing as "no reading". If it reads "1" on the left hand side, that means "out of range" or "infinity".

Remember a diode lets current one way and blocks the other way.

Hmm, we get this on a daily basis now. Time to write another guide. See

https://www.badcaps.net/forum/showpo...2&postcount=31

Ok, that's what I meant. So it's good.

Edit: Checking D912

[retiredcaps]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

After removing it, D925 now gives me .463 and no reading the other way.

D925 is good. What about D912?

BTW, there is no such thing as "no reading". If it reads "1" on the left hand side, that means "out of range" or "infinity".

Remember a diode lets current one way and blocks the other way.

Hmm, we get this on a daily basis now. Time to write another guide. See

https://www.badcaps.net/forum/showpo...2&postcount=31

[retiredcaps]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

ZD904 .02 and .02

ZD902 .05 and .05

ZD904 and ZD902 are bad for sure.

Havin a bitchin time trying to get these things out.

Add fresh 60/40 solder to the joint first to help with thermal transfer.

[tw1ztid]

Re: Phillips 42PFL5432D/37 Chirping and No Picture

After removing it, D925 now gives me .463 and no reading the other way. So it looks good after all