PANASONIC SA-PT770 HOME THEATER SYSTEM NO POWER REPAIR STR-X6729 

Another great walk through, thanks for posting. Good tip on being mindful that the caps can still have a charge even if the device appears to not be working.

Dude I had the same problem with my unit after not using it for awhile Funny thing is once I opened it up and spin the fan it stated working again, thank you for being so knowledgeable and detailed with the information.

I always learn something from your awesome repair vids. Thank you for the tight solder close-ups - love it!

Love your desoldering tool !!!!!!! Check all capacitors for High ESR too. Well done Sir.My sentiments exactly. Lets keep E waste bins to a minimum wherever possible.

I have the same problem with same unit. I live on Poland and looks like im gonna have to deal with it myself. Thanks for this video. ❤️

By following your video and replaced my bad str6768 now my dvd/5.1 surround back to life ,thanks for sharing your video and guide

Interesting and excellent repair! Thanks

Thank you for wonderful video.

nice job thenks.more like this please

Not only does NorCal715 talk the talk he walks the walk also.

Great video.

Great job thanks

Yep a fan can do a few things in ........ A friend called me about a desk top PC, he said the screen said CPU is too hot , so he let it cool down and nada.... I told him if he a spare tower that had the same fan in it , he could use that and he would have it up and running ..... He called me back later on and said it worked just fine.........BTW I just joined your team Mon Ami .............

Display says Hello YOU FIXED ME !

I have also a no power, verrrry slow starting philips htc 7200/12 player set, and there are a lot of rare noises, when i power on, the touch device is on than off, blinking.. And after 2 minutes there is more power on, and backlicht also on. Now i wil know looking whats the problem, and i think its the same as you show, good video..

just started to look at uk version of same machine sa-pt570 uses a STR-X6768 same fault, that cap in the uk has 320v on it will kill you. so sharp intake of breath here when you touched it. Will try to change chip, definitely not starting to oscillate as Vcc only 10v so only from bootstrap. Only thing found so far was C5726 10mf 50v cap bottom blown out (vcc to s).

A very rare case when replacing a IC STR6729 starts working power supply.

நன்றிநன்றிநன்றி

Thanks for the video! I'm positive this will work (have the 2 clicks w/no power and no fan + it does power on sometimes but then gets warm after watching a film and then shuts off after mere minutes. Was running on wrong voltage, 110v, when it should've been running on 220v. Power controller probably damaged now). Does the SK number matter? Code on power controller is as follows: STR X6768 (SK 9526N). KSA/Middle Eastern version SA PT-875.

Very interesting repair. I have sony hcd-sr2 made in korea 5.1 amplifier it turns on then show standby. any suggestions?

I have Panasonic SA-PT870 with the same issue, after plugged into 240V socket with voltage switch as 110V (yes, this is a dual voltage version). It worked for a while after my mistake and now it is dead with this two relay clicks. I replaced STR-X6729, but it still has no power. I took the board out and checked the rest of diodes, transistors and caps and so on, all seems just fine, but the STR-6729 is simply not oscillating!! Vcc is only at 8V after I took the board out and shorted the relay contacts. The 10uf/50V cap is also fine. I am running out of idea on how to isolate the issues. Any ideas on what else I should look for will be greatly appreciated.

Just how a repair video should be - relevant information , concise and to the point. And successful. Well done.

@ 4:40 minutes of your video, there are some more looking brown or branded connection spots, on the right from the red sparkles, you can see, is that oke? Or can it given also some error issues?

Hi, I have the SA-PT470 and it does the same two clicks than yours do, will check it later but it's probably using the same STR-X6729 controller, did you get any weird measurements in diode function on that component? Thanks from Medellín Colombia.

I am having the exact same issue with mine. However it still does the same thing after I replace the 6729 chip. However, when I check two of the 33k resistors like you did I only get 31.86. The 22k and the 33k next to it have good readings but those other two are low. Could that be the issue? Do I need to replace those? Where do I purchase them or is it not worth it?

the same problem happens to happens to SA-AKX600 could that be the same resolution because it also showing F61

I have a sa-bt100 it is getting no power no on lights and not making any clicks or noises . I have tried multiple power cords to see if they were bad but not working still . What should I do next

My panasonic sound system sa-ak117 also not turning on does the same clicking sound while pressing the power button Will be the same issue

THIS CAUTIN ABSORVER I NEED ONE WHAT MODEL DO YOU NEED I HAVE A SOUND EQUIPMENT PANASONIC MODEL SA-AK770 AC 110 50/60 HZ 145 W THAT DOES NOT ACTIVATE THE FANS AND GETS ERROR F61 I HAVE THE REGULATOR IC STR-X6768 WOULD IT BE POSSIBLE WHAT IS THAT REGULATOR I WOULD LIKE TO KNOW WHAT OUTPUT VOLTAGE BECAUSE I CONNECT IT TO THE BOARD AND AT FIRST IT GIVES ME A 35 VOLT DIRECT CURRENT VOLTAGE BUT THE VOLTAGE SLOWLY FALLS TO 20 VOLT DC I WOULD LIKE TO KNOW WHAT OUTPUT VOLTAGE DOES IT HAVE TO GIVE? GREETINGS FROM ECUADOR

He made this one look easy but I wonder how long it took the find the bad chip in the first repair. I am sure it was not as easy.

need help... any ideas might be of help... i have an older jvc mx j900 stereo.. i moved the other day, opened the back door to truck and stereo fell to the ground and now it won't turn on it landed on the top left corner , i have taken it apart and see nothing cracked or unplugged .all looks normal.

Hey, if got a old sa-xh150. No power. Im a noob but im trying. Fuse is ok, but then im lost.. i really want to learn how to fix

I have the Panasonic SA-PT650 and I hooked up a after market sub, i can hear sound from the actual speakers but nothing from the sub. Any clue what that could be?

I have the same problem with my panasonic home theater system sc ht 700 as well 😔 just wishe I can get it fixed its the only thing I have of my father 😢

What if i cant switch to aux or dvd with remote or manually it only changes to radio staions volume up n down it was working fine yesterday ..what could it be if u could help me out would really apreciate it

How you rectify STR IC is faulty without checking values in multimeter

My model is SC-XH301 power on problem kindly support for that ...

Hello I have the same device with the same problem, Where could I send you my equipment to repair it, would this repair be very expensive? Thank you.

I have SA PT470,

I have this same unit and same exact issue with the two clicks and no power. Should I assume it's most likely the same issue or is there a high probability it's something else also? Don't want to waste my time trying to fix it if it could be a number of things.

Hello my friend. I have same problem on my. Panasonic sa-pt740. Its the IC same number?

Hai.. My panasonic sa pt980 model home theatre are not audio output problem. Power on running successfully. But play song audio output was not coming.. Ask to service center he says audio board was problem u can change the board issue was solved. They are costly... Any solution?

What was that unsoldering tool please?

How many volt on power

9:36 that Electrolytic capacitor on surround sound board looks really nasty from this point of view.

Hi need that IC can you help? from India

Hello Norcal715, I have exactly the same equipment with exactly the same fault, now I ask you a question, is there a possibility that I send it to you by mail and you do the repair, how much is the cost for this repair? Thank you very much in advance.

Maybe they don't get any power onto it anymore because it's over 20 years old.

What NorCal means

Can you repair my DVD player for me

Can I send you my sa pt-673 for repair?

If so how much do you charge

I wish there was a way to cheat this. Dont think id be able to buy parts for mine

i have same device. in my device relay dont turn on.but i have 5 volt .

Can I pay you to fix mine

panasonic SA-HT670 WAIT ........ BROKEN MECANISM DVD SKIP PROTECTION???

No Power, two clicks

I am looking for engineering skills