Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

[Michale32086]

I am getting a tad paranoid here about Panasonics..

Panasonic TH-42PZ85U just came in. Dusty as all hell..

10 Blinks on the power LED at plug-in..

Got the repair manuals from Tom's site (Thanx Tom!! )...

ƒ Find out if 15V is output at pin 7,8,or 9 of connector P6 of the P board. If no voltage is output, the P board may be defective.
ƒ
If the F_STB_15V voltage is OK, it's likely that the A board is defective.
ƒ
Since some of the Sub-voltages generated by the A board are connected to the K, GS, and GH boards, it's also likely that one of these board may cause the unit to shut down and the power LED to blink 10 times.

ƒ Disconnect connector A1/K1 to isolate the K board.

ƒ Disconnect connector A/52GS52 to isolate the GS board.

ƒ Disconnect connector A11/GH11 to isolate the GH board.

The defective board is found when the connector that provides the Sub-voltages to that board is removed and the TV no longer shuts down.

P6 of the Power Board. Pins 7 & 8 are dead.. 0v Pin 9 shows 5v

Bad power board??

[capkid]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Ten blinks is usually a PSU issue. I've corrected a few of this era Panasonic: http://youtu.be/LjpGKaBt8hg

[tom66]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Can confirm, done more than 8 of these so far. Great when working, they use a lot of power tho!

[Michale32086]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Ten blinks is usually a PSU issue. I've corrected a few of this era Panasonic: http://youtu.be/LjpGKaBt8hg

I actually saw that exact YouTube when I first googled this.. Coupled with the manuals from Tom's site, it really gave me some good info..

Can confirm, done more than 8 of these so far. Great when working, they use a lot of power tho!

Yea, this one has a buttload of fans.. And where there is fans, there is dust.. Oh my gods, the dust!!

Replacement Power board is spendy..

Is there a common component in all your repairs??

Thanx to both for the replies..

[capkid]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

I actually saw that exact YouTube when I first googled this.. Coupled with the manuals from Tom's site, it really gave me some good info..





Yea, this one has a buttload of fans.. And where there is fans, there is dust.. Oh my gods, the dust!!

Replacement Power board is spendy..

Is there a common component in all your repairs??

Thanx to both for the replies..

In one of the Panasonics I repaired about four years ago, I got away with only replacing the cap on the small module, and it's been running fine since. Typically, it's best to replace the chip and the adjacent cap.

[Shinju]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Just sold one of these not to long ago, great panel, excellent black levels and like Tom66 said she does suck a bit of wattage!

[vinceroger69]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Not sure if this is the same model but this fix is what i carried out on my panasonic.
https://www.youtube.com/watch?v=LjpGKaBt8hg

Edit! just realised its the same video capkid posted i should of clicked the link first.

[Michale32086]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

In one of the Panasonics I repaired about four years ago, I got away with only replacing the cap on the small module, and it's been running fine since. Typically, it's best to replace the chip and the adjacent cap.

Can you ID which one??

[capkid]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Can you ID which one??

Did you watch the video? The two modules that house the chips and caps are MC201 and MC301.

[tom66]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Watch the video that Capkid linked. It's usually the same fault on these for 10 or 2 blinks. I can do one in about 45 minutes now. Getting the plastic insulators back in place is a pain in the arse... and don't lose any of the screws on the back of the heatsink plate...

[capkid]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Just sold one of these not to long ago, great panel, excellent black levels and like Tom66 said she does suck a bit of wattage!

Good space heaters in the winter.

[Michale32086]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Did you watch the video? The two modules that house the chips and caps are MC201 and MC301.

Not all the way thru..

It looked like the one in the video is a different set up than this model..

But I'll watch it all the way thru now..

[tom66]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Not all the way thru..

It looked like the one in the video is a different set up than this model..

But I'll watch it all the way thru now..

He has the 50", board numbers are the same but the 46" and 50" use bigger PSUs (the same for both) than the 42".

[freakaftr8]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

usually every time I get one of these TVs with the MC 301 / 201 usually this is the problem but even if there's other problems with the set I always replace these capacitors just for reliability in the future but yes like everybody else is saying most likely always the 10 flash flash to flash syndrome is from the faulty caps on these boards

[Michale32086]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

OK, did a Freeze Spray on MC301 and MC201...

Did not make any difference in the 10 blink error..

Does that mean my error/issue is different??

[tom66]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

OK, did a Freeze Spray on MC301 and MC201...

Did not make any difference in the 10 blink error..

Does that mean my error/issue is different??

Did you make sure to spray on the suspect cap? Also make sure to remove the moisture (that condenses from the freeze spray) on the module.

[freakaftr8]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Try heat

[Michale32086]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Did you make sure to spray on the suspect cap? Also make sure to remove the moisture (that condenses from the freeze spray) on the module.

Call me blind (no, really go ahead, it's OK.. ) but I don't see the cap ya'all are referring to..

[sordids999]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

watching the video refers to that cap in the picture

[vinceroger69]

Re: Panasonics Are Out To Get Me TH-42PZ85U 10 Blinks

Yes thats the ones i changed on my set still works today i didnt change the ics though i wonder if the ics have gone on yours hence why freezing isnt working?