Philips 42" 715T2432-2 issues

[jrockit513]

Re: Philips 42" 715T2432-2 issues

the problem i have traced down is the zd906......spray it with a can of air upside down and it should change the chirping sound. and thats the problem. fixed my tv

anyone know where I can order the zd906? got a part number for it? I am going to look on digikey Im not sure where else to look

[tvrepairguy]

Re: Philips 42" 715T2432-2 issues

the problem i have traced down is the zd906......spray it with a can of air upside down and it should change the chirping sound. and thats the problem. fixed my tv

[Draconis]

Re: Philips 42" 715T2432-2 issues

check those zeners haven't blown again @ ZD904, ZD902

[Draconis]

Re: Philips 42" 715T2432-2 issues

The big cap was bad on mine

[mavrick2k]

Re: Philips 42" 715T2432-2 issues

Well I replaced everything. Tv Fired up fine went through menus. I got excited went out and got a wall mount for the bedroom. Mounted the sucker hooked everything up and powered on. Damn thing started chirping again

[mavrick2k]

Re: Philips 42" 715T2432-2 issues

I orderd 11 caps because i figured to go ahead and get rid of all the crapxcon while i was at it. I did not order the big one though and I did not test it. Was yours bad or did you replace it just because. I prolly should have ordered it as well.

[Draconis]

Re: Philips 42" 715T2432-2 issues

I've got to say I'm appalled at Phillips the company they are about as much use as a chocolate fireguard when it comes to helping the end user.....that's the problem these days with this throw away society we live in .....its' a shame

[Draconis]

Re: Philips 42" 715T2432-2 issues

I've resolved the issue with the power supply I had, same issue chirping on startup/load I've replaced the following parts and now have a working PSU

C953,C952,C951, C955, and the big 220uf 450V cap

ZD904, ZD902

D922

(5 caps 2 Zdiodes 1 rectifier beats your 11 caps 2 Zdiodes and rectifier ....<grin>)


Just thought I'd pass on my success on this repair (your mileage may vary)

[mavrick2k]

Re: Philips 42" 715T2432-2 issues

I had not reordered parts. I got busy and had not had time and then i did some more research. Seems like people do get it running again by replacing majority of caps and zd902&904. One post had stated the Q902 - Shorted. Got a new meter that did capacitance so tried testing a few caps. pulled five off the board and all five tested bad. Then tested with a friends meter with the same. Thought about getting a esr meter but dont want to spend the money for as little as i would use it. I tested 922 and got a short. So I am putting in the order now for 11 caps 2 diodes and that rectifier.

[Draconis]

Re: Philips 42" 715T2432-2 issues

Hi Mavrick2k,
did you resolve this ? I'm at the stage of replacing the Zeners ZD904 and ZD902, I'm also replacing the rectifier STPS40H100CW, Dual Schottky Diode, 40A 100V Common Cathode, Dual, 3-Pin, TO-247 at D922, I've ordered most of the caps as well.....getting fed up with this PSU....seems like its a common fault, just wondered if there was a iron clad fix for it....other than trial and error

[mavrick2k]

Re: Philips 42" 715T2432-2 issues

Thanks for the info Ron. I have seen those kits. I already did the main 3. Looks like i will order the rest of the caps and the 2 diodes this weekend and give it a try.

[RON_CET]

Re: Philips 42" 715T2432-2 issues

I have used this power kit from ShopJimmy which fixes most of all the common issues on this board including the power supply "chirping" out of about 15 boards I've done haven't had replace any of the switch mode transformers mention in above posting see attached for kit

[mavrick2k]

Re: Philips 42" 715T2432-2 issues

has anyone traced the source of this problem down or even replaced the whole power board and get the tv working again. I am looking at this issue now. replaced the 3 caps and now getting chirping. dont want to waste time tracing down everything else on the board if this many people have not gotten it fixed. would be nice to know if replacing the entire board would fix it too.

[twnznz]

Re: Philips 42" 715T2432-2 issues

Do a google search for "50114604-philips-37-42-47mf437b-37-42-47pfl5432d-37-chassis-tpm2-0u-la-sm-ET-1" and you'll find the service manual with part numbers and schematics although, you won't find a part number on the transformer. Those aren't replaceable.

Good luck.

I would hate for someone to pay Scribd for this manual, so please find it at https://mega.co.nz/#!YhVy3DAb!bwGoHE...F00l__qMQfimTg

Did anyone figure out how to fix the chirp?

[jak13]

Re: Philips 42" 715T2432-2 issues

I found the transformer, T904 (996510002520), at www.ued.net for $3.93. They have a huge list of parts.

Is 996510002520 for Transformer T904 or T905. Is there a way to check to see if the transformer is bad? I pulled diodes ZD902 and ZD904 and tested them both, they are both bad. Both shorted open reading 9 volts both direction.

[MR. TEACH]

Re: Philips 42" 715T2432-2 issues

I have worked on quite a few of these LG Philips power supplies lately and have found that a shorted transformer is the culprit most of the time. Unfortunately you will not be able to find a transformer anywhere and have to replace the whole supply if that is the problem.

I found the transformer, T904 (996510002520), at www.ued.net for $3.93. They have a huge list of parts.

[colonelget]

Re: Philips 42" 715T2432-2 issues

I was just wondering if you ever got this board repaired. I'm having the same problem. I'm an electronics novice I can test components and solder but thats as far as my skill set goes. I bought a "repair kit" for the power supply from ebay. It was replacement caps for C951 C952 C953 and C955 and two replacement diodes for ZD902 and ZD904. I still get the same chirp as before.

[edtv]

Re: Philips 42" 715T2432-2 issues

Im at wits end myself from working on this power supply. I purchased every part # I could find on mouser.com and will give it once last shot. I removed and tested the large transformer and it appears and look fine. I don't think it's the problem... I think it's in start up before it. Possibly at D924 or ZD906 or Q908. It makes more sense a chirp would come from a resistor or diode... I'm just hoping it's not the smps chip.

Do a google search for "50114604-philips-37-42-47mf437b-37-42-47pfl5432d-37-chassis-tpm2-0u-la-sm-ET-1" and you'll find the service manual with part numbers and schematics although, you won't find a part number on the transformer. Those aren't replaceable.

Good luck.

[VTWIN]

Re: Philips 42" 715T2432-2 issues

Hello RayRod81, you do not by any chance have specs on the transformer, maybe the OEM, or a cross reference ? I am not a tv tech but have repaired many, usually rear projection. Many certifications in network services but this TV has me in fits. After replacing the inverter boards I heard the chirp. Can you tell me if the PS has this particular fail if it affects the inverter boards ? I suspect now that my inverter bds are ok and not the problem at all. Appreciate your time man..

[VTWIN]

Re: Philips 42" 715T2432-2 issues

Hello Gents !

New to badcaps, found the site while looking for the caps \ repair kit, I also have the phillips 42 " TV. Changed the Inverter boards and no High V so no picture. I did not hear the "chirp" until I replaced the inverter bds. I can get the caps from my local shop but cannot find the suspect transformer and was wondering if anyone had either an OEM or a cross part ##. I am \ was a component level technician that has moved into network services for the school system I work for. Not exactly a TV tech but have repaired many. Have been in networking since 1985 so several yeaars in the component level industry and lots of radar equip repair in the navy. If anyone has any info on a lead for the transformer I am most grateful.

Thanks for the help