Panasonic TX-P42S30B - 6 blinks

[newtothis]

Re: Panasonic TX-P42S30B - 6 blinks

Extremely pricey TBH for a repair on these TV's tw.

The IGBT's and diodes are tough to get off on these boards.. The copper plane is big and acts as a good heatsink (Tho not good enough to stop them failing!) I tried with hotair alone and jeez did they take some heat! Ended up using my IR machine to do them.

Yes seen a fair few broken boards from attempted repairs mainly lifted traces etc which yes are repairable but not want you want to be dealing with... My advice is if you don't have much experience in soldering to get them done properly otherwise you may scrap your board.

[tw2005]

Re: Panasonic TX-P42S30B - 6 blinks

Extremely pricey TBH for a repair on these TV's tw.

The IGBT's and diodes are tough to get off on these boards.. The copper plane is big and acts as a good heatsink (Tho not good enough to stop them failing!) I tried with hotair alone and jeez did they take some heat! Ended up using my IR machine to do them.

Yes seen a fair few broken boards from attempted repairs mainly lifted traces etc which yes are repairable but not want you want to be dealing with... My advice is if you don't have much experience in soldering to get them done properly otherwise you may scrap your board.

For sure we know the parts can be had very cheap, but is it worth failing throwing money and damaging the board or go the safe path and get a pro?

wHAT'S ONE OF THESE WORTH USED IN THE uk?

Anyway, converted to my speak that's $200 and you could probably get a working 2nd hand for that here.

Bit surprised you find it hard to get them off. i get away with a 40W iron, tin the tab and broad tip. run the tp back and forth along the tab until you see the sides bubbling and off. I lift the legs first OR snip them. does take a while for the heat to get there.

[MikeFloutier]

Re: Panasonic TX-P42S30B - 6 blinks

It is really but thanks for the suggestion. I know there is a place around 5 miles from me - Watford - that are advertising to refurbish the SN board for £99.

To be honest I'll probably just buy a new tv as my wife will get impatient soon.

Thing is I enjoy working on stuff even though I don't really need to.

I can buy the 30F131s locally for £20 inc tax & postage.

Anyway, one way or the other I'd like to remove the board and get started.

What are my chances if I just replace the 4 shorted 30F131s do you suppose?

[flocko]

Re: Panasonic TX-P42S30B - 6 blinks

Hi Tw What make you think that? but yes I do have a repaired one on eBay and like to do them exchange so I can keep them in stock £60.00 if you return you old board or £80.00 if you don't , and I keep a set for testing . have to make the house-keeping somehow now I am retired Flocko

[newtothis]

Re: Panasonic TX-P42S30B - 6 blinks

It is really but thanks for the suggestion. I know there is a place around 5 miles from me - Watford - that are advertising to refurbish the SN board for £99.

To be honest I'll probably just buy a new tv as my wife will get impatient soon.

Thing is I enjoy working on stuff even though I don't really need to.

I can buy the 30F131s locally for £20 inc tax & postage.

Anyway, one way or the other I'd like to remove the board and get started.

What are my chances if I just replace the 4 shorted 30F131s do you suppose?

Most likely pop the board again if you swap only the IGBT's.

[tw2005]

Re: Panasonic TX-P42S30B - 6 blinks

Most likely pop the board again if you swap only the IGBT's.

possibly.

I've done a 50U30 - just 4 x 30f131, 50ST30 3 RJP30H2 and 2 of 3 30f131 failed and that was it. hard to put odds on whether it needs more or not

Flocko would have a good idea on what else to check and it's hard to guide blind especially since you don't have electronics background

[MikeFloutier]

Re: Panasonic TX-P42S30B - 6 blinks

Interesting, it does sound as if I might do more harm than good, given the various different possible pitfalls.

[MikeFloutier]

Re: Panasonic TX-P42S30B - 6 blinks

possibly.

I've done a 50U30 - just 4 x 30f131, 50ST30 3 RJP30H2 and 2 of 3 30f131 failed and that was it. hard to put odds on whether it needs more or not

Flocko would have a good idea on what else to check and it's hard to guide blind especially since you don't have electronics background

Many thanks for all your time and help with this TW, it's really helped me to think it through; much appreciated!

I'm going to ponder a while and either get the SN refurbed or bite the bullet and get a new LED tv.

[tw2005]

Re: Panasonic TX-P42S30B - 6 blinks

Interesting, it does sound as if I might do more harm than good, given the various different possible pitfalls.

your call, would be great to DIY, but these boards are near impossible to get so a good core board for repair is something to keep in mind if you want to keep the cost down otherwise you'll need to find complete board for sale not just a repair service.

60 quid, from Flocko and tested

[Moreno83]

Re: Panasonic TX-P42S30B - 6 blinks

If i were you i would repair this tv instead of buying a LED tv. But thats my opinion

Panasonic plasma's look much better then a led screen!

[tw2005]

Re: Panasonic TX-P42S30B - 6 blinks

If i were you i would repair this tv instead of buying a LED tv. But thats my opinion

Panasonic plasma's look much better then a led screen!

Plus LED is just the backlight, same old LCD panel. The 50' panny LED LCD at work is total crap, worst picture and color is horrible, very cheap inside these too and $1000 TV! I think it 50A430

mainboard is a joke compared to the past but it is base model FHD

[tw2005]

Re: Panasonic TX-P42S30B - 6 blinks

Many thanks for all your time and help with this TW, it's really helped me to think it through; much appreciated!

I'm going to ponder a while and either get the SN refurbed or bite the bullet and get a new LED tv.

replacing the bolts on these boards is a good idea too, wrong type used and they work loose, poor earthing and could also be part of the problem.

search my profile and threads started for the 50s30 i think I listed it as which is a fib, we have u30 same panel and boards really. I have some photos of arc marks and the bolts

[MikeFloutier]

Re: Panasonic TX-P42S30B - 6 blinks

your call, would be great to DIY, but these boards are near impossible to get so a good core board for repair is something to keep in mind if you want to keep the cost down otherwise you'll need to find complete board for sale not just a repair service.

60 quid, from Flocko and tested

Thanks TW, and for the other later comments, I think pro refurbing sounds sensible.

[tom66]

Re: Panasonic TX-P42S30B - 6 blinks

The picture quality on these 2011 panels is really good. It beats most other plasmas except my Kuro, and exceeds every LCD/LED-LCD I have seen.

[MikeFloutier]

Re: Panasonic TX-P42S30B - 6 blinks

Thanks Tom, I've ordered a replacement SN board; hopefully it will do the trick.

[MikeFloutier]

Re: Panasonic TX-P42S30B - 6 blinks

your call, would be great to DIY, but these boards are near impossible to get so a good core board for repair is something to keep in mind if you want to keep the cost down otherwise you'll need to find complete board for sale not just a repair service.

60 quid, from Flocko and tested

Thanks TW, I've followed this advice and will report back in due course.

[MikeFloutier]

Re: Panasonic TX-P42S30B - 6 blinks

Almost sounds like you want to take on the board repair for him

Just about to remove the SN board and realised that it contains 250v caps.

I've bought a couple of 2.2k ohm 5w resistors for discharging and understand that I should hold them with insulated pliers.

What I'm not sure about is how to tell that they are discharged properly.

Can I use my analogue multimeter on the caps terminals? If so, what setting should I use?

[Alastair E]

Re: Panasonic TX-P42S30B - 6 blinks

Providing the set hasn't been on for a while--the caps will be discharged....

[MikeFloutier]

Re: Panasonic TX-P42S30B - 6 blinks

Providing the set hasn't been on for a while--the caps will be discharged....

Many thanks Alastair!

[tw2005]

Re: Panasonic TX-P42S30B - 6 blinks

Just about to remove the SN board and realised that it contains 250v caps.

I've bought a couple of 2.2k ohm 5w resistors for discharging and understand that I should hold them with insulated pliers.

What I'm not sure about is how to tell that they are discharged properly.

Can I use my analogue multimeter on the caps terminals? If so, what setting should I use?

for future, if I saw a cap with 250V you would set the meter to at least that voltage. Since these are polarised they're DC with the with band dictating the negative side

Vsus or the voltage going into SN2 can be up to 215V-220v on some models