TNPA5105 Meltdown Parts Needed !

[ReeceyBurger123]

Anyone have the schematic I cant find it on google ??

My board is a bit more complex, following parts some are not included in repair kits are dead:

Q451
D482
Q422
Q421
D402
D401
Q402
Q401
D422
Q660
Q661
IC521
R421
R422
R551
R506

If any one has the PN or schematic to help me find what parts I need I will be very grateful.

[Alastair E]

Re: TNPA5105 Meltdown Parts Needed !

Ha!

Join the 5105 Club! Ive got one to do as well a 5081!

Funny thing was--I was looking to order some more of those dual-transistor pairs, but RS website being uncooperative--wont show me my last order..

Guess I'll have to wait till I get to work tomorrow I'll list the RS part-numbers of all the ants needed....

[Alastair E]

Re: TNPA5105 Meltdown Parts Needed !

Off top of my head--Need to be changed--Or at least severely tested first before firing the rebuilt board up--

Q701 SMD Transistor
Q702, SMD Transistor
D702 SOD-323, 85V 150mA fast diode
IC773 Inverter, 5 legged ant
Q818 TINY MOSFET
IC771 5V reg
--All the above, best just change on sight.

PC461 Transoptor--This part caused my rebuilt 5105 to blow up again--Got some on order from China...
IC521 Mitsi chip normally kacks it.
IC501 Mitsi chip sometimes survives

--Plus Any--All the 5 legged ants that Drive the shorted IGBT's--The Dual-Transistor pairs....

[ReeceyBurger123]

Re: TNPA5105 Meltdown Parts Needed !

Cheers Alistair found the part numbers for the following:

Q451 45G128
D482 RFUS20 TM4S
Q422 RJP43F4A
Q421 RJP43F4A
D402 Need SCH !
D401 Need SCH !
Q402 DG502LW
Q401 DG502LW
D422 Need SCH !
Q660 R5007ANX
Q661 RJP63F4A
IC521 M81737FP
R421 7R5
R422 7R5
R551 10ohm 1/4W 5%
R506 10ohm 1/4w 5%

If any one has the PN or schematic to help me find what parts I need I will be very grateful.

[ReeceyBurger123]

Re: TNPA5105 Meltdown Parts Needed !

Off top of my head--Need to be changed--Or at least severely tested first before firing the rebuilt board up--

Q701 SMD Transistor
Q702, SMD Transistor
D702 SOD-323, 85V 150mA fast diode
IC773 Inverter, 5 legged ant
Q818 TINY MOSFET
IC771 5V reg
--All the above, best just change on sight.

PC461 Transoptor--This part caused my rebuilt 5105 to blow up again--Got some on order from China...
IC521 Mitsi chip normally kacks it.
IC501 Mitsi chip sometimes survives

--Plus Any--All the 5 legged ants that Drive the shorted IGBT's--The Dual-Transistor pairs....

Will check them now buddy, this isnt going to be cheap

[ReeceyBurger123]

Re: TNPA5105 Meltdown Parts Needed !

This is a nightmare, not even got the parts together yet and its £38.78 in total so far and thats for the cheapest I could find ! Might see if I can mod the Sustain boards from a Tx-P42S10B which has an unfixable motherboard into this panel which is a TX-P42U20B the PDP's are 1 gen different from each other, what do you think ?

Not like I have not got the money just seems alot for a 42" IMO but we shall see.

[Alastair E]

Re: TNPA5105 Meltdown Parts Needed !

All the tiny SMD stuff is pennies from RS. The more expensive parts are the Mitsi chips IC501/21, and the heatsink stuff, they are cheap from China--But you wait for 'em....

The Transoptor (opto) is difficult to get, none on fleagay or usual parts suppliers here. IF you can wait a week or two--I'll send you a couple--But DONT fire up the board without replacing/testing that part--I did and regretted it....
Available from China too--UT has 'em

Worth reading through my recent post on 5066 (sorta similar, but integral buffers) Much the same stuff kacks it on that board too.

More reading is the TNPA5081 thread by TW2005, There's most similarity to 5105 as its a cut down 5081 basically...

[Alastair E]

Re: TNPA5105 Meltdown Parts Needed !

Tell you what--Ive got all the small stuff, I can send you the usual suspects like Q701 etc, but I'm short on D702, the Mitzi chips, and transoptor...

--All you would need then is the heatsink stuff..

Doubt the conversion to earlier SC would take--Holes for mounting are the first thought--And you know what Pans are like for earths....

[ReeceyBurger123]

Re: TNPA5105 Meltdown Parts Needed !

Cheers, if your free tomorrow some time can I call you or do you have skype to sort something ? Also im going to take a look tomorrow see of anything is interchangeable the PDP schematic is the same just the drivers are different.

[Alastair E]

Re: TNPA5105 Meltdown Parts Needed !

42S10...

Isnt that the cheapo Argos FHD?

[ReeceyBurger123]

Re: TNPA5105 Meltdown Parts Needed !

No its a real Panny lol version below the S/U20B

[tw2005]

Re: TNPA5105 Meltdown Parts Needed !

This is a nightmare, not even got the parts together yet and its £38.78 in total so far and thats for the cheapest I could find ! Might see if I can mod the Sustain boards from a Tx-P42S10B which has an unfixable motherboard into this panel which is a TX-P42U20B the PDP's are 1 gen different from each other, what do you think ?

Not like I have not got the money just seems alot for a 42" IMO but we shall see.

somewhat ambitious I would expect. it would be the whole sc,sd,su just so the boards line up, then the panel mounts won't match.

[tw2005]

Re: TNPA5105 Meltdown Parts Needed !

Cheers Alistair found the part numbers for the following:

Q451 45G128
D482 RFUS20 TM4S
Q422 RJP43F4A
Q421 RJP43F4A
D402 Need SCH !
D401 Need SCH !
Q402 DG502LW
Q401 DG502LW
D422 Need SCH !
Q660 R5007ANX
Q661 RJP63F4A
IC521 M81737FP
R421 7R5
R422 7R5
R551 10ohm 1/4W 5%
R506 10ohm 1/4w 5%

If any one has the PN or schematic to help me find what parts I need I will be very grateful.

d401,402 are panasonic diodes F50ALW or DA3DF50ACSLW. these have been discussed recently spec wise in the 510V 20A fast rectifiers. never had to replace any of these so far.

d422 B0FACP000005, RFUS20T4S and that's in the 430V 20A range

It should be the same diode as D482

I assume you've puled the IGBTs and confirmed all these diodes are still bad? Seems unusual all these are shorted. D482 is a common one to fail.

Both are single diode configuration

for schematics you just need any manual that has a TNPA5105 for a 42". But they may help with fault finding but little to no good for the bits. It took me weeks to nut most of these out on the 5081 board when I first started trying component on these.

Unless it is a panasonic part it will be a meaningless code not OEM but I have stumbled on a couple of engineering drawings which had some real numbers. It was just one huge jigsaw i spent endless hours digging.

So that would be manuals for anything like S2,S20, U2 or U20 variants in any market. Will find on Elektrotanya or even here searching models

TC-P42S2,
TC-P42U2,
TX-P42S20E
TX-P42S20ES
TX-P42S20L
TX-PF42S20
TX-PR42S20

Have you done any other SC boards? You may have bits that would potentially sub

[Alastair E]

Re: TNPA5105 Meltdown Parts Needed !

Its unlikely--As TW says--That All the diodes are duff on the heatsinks. Many are in parallel with the dead IGBT's

Is this an urgent repair--Or can you sit on it a week or two?

~I'm expecting some parts Ive ordered and have plenty of the others, I can send you what I have, FOC--On condition you document your progress of the repair...

[ReeceyBurger123]

Re: TNPA5105 Meltdown Parts Needed !

Im in no rush got a couple of 42" Tvs ready atm, and yes the diodes were shorted as well as all the Igbts I pulled. This is crazy lol

[tom66]

Re: TNPA5105 Meltdown Parts Needed !

And so luck has it when I get a '20 series Panny it's a bad main board not SC...

[tw2005]

Re: TNPA5105 Meltdown Parts Needed !

And so luck has it when I get a '20 series Panny it's a bad main board not SC...

yeah, sucks, Funny how you get sucked in expecting SC. Of the last 6 I've touched, 1 Sc, 2 x Su, 3 x A(eeprom, shorted SD slot and a burial)

[ReeceyBurger123]

Re: TNPA5105 Meltdown Parts Needed !

And so luck has it when I get a '20 series Panny it's a bad main board not SC...

Haha lol typical

[Alastair E]

Re: TNPA5105 Meltdown Parts Needed !

Well--Guess I got 'Lucky' then!

Out of five sets--Only one Mainboard on the nice little 37". Rest have been SC/SN and SS on 42" and 50"

This 50" with the dead TNPA5105 Ive decided to have a first-stage check of it has 8 heatsink parts dead.

Q661--Innit ALWAYS!
Q660--Unusual
Q401
Q402
Q421
Q422
Q451
D482

The Gate Resistors to the above would be replaced anyway one or two don't look too good, but in addition I would be looking at--

Q501
IC501--Possibly
The tiny diodes and transistors associated with Q660

D451
Q521
Q551
IC521--Definitely

Then the dead-ants--
Q701
Q702
D702
D701--IF Fitted.
Q818
IC771
IC773

After dead ants above evicted, we check the resistance of the IC771 from Output to deck (Of IC771 pad on board) after its removal--
One way should climb quickly to 100K Other way will climb slowly to 1M.

--This will check the Transoptor, PC461--although ANY doubt of this part it'll need replacement, as its the only semi-device left on that 5V rail

[ReeceyBurger123]

Re: TNPA5105 Meltdown Parts Needed !

Total parts list for me going to cost £46.89 Replacement board is £60 ohh well will see what I can do.