Bar 48 No-Power Repair Thread

[skunkworks.indigo]

7 hours ago, ongtw75 said:

 

I think they both are of the same capacitor specs and yes, I would change both since we're already here.

 

Okay got it. Just ordered these: 

 

https://a.co/d/aibNARB

 

(the 1000uf 16v 105° capacitors) 

 

@Matt in LA maybe check yours again? It might not be apparent if there's some glue in the way (mine were like this) but if they're blown they'll be not flat across the top compared to the other transistors. I had to look pretty close to see the top bulging up a bit.

[Matt in LA]

Good work!! Please keep me  posted. If those work for you, I will order them. I have a friend who is a neater solderer than me, so I will enlist his help. 

[Matt in LA]

I also just noticed that I seem to have a different brand of caps than the two you have in your power supply that of the one is seemingly blown.  See the phot of my PS on the previous page. Curiouser and curiouser....

[skunkworks.indigo]

The ones I ordered, searched as "1000uf 16v 105c" on Amazon turned out to be not the right capacitors. They're the same size as the larger size ones next to the smaller ones that I need, although they have similar specs. 
 

When I added "low esr" I got some identical looking capacitors that I just ordered: 

 

https://a.co/d/fpGBFRY

 

They have the same color and markings as the ones currently on the board. 
 

They should arrive by Sunday so I will get to the soldering then and post results!

Edited September 6, 2024 by skunkworks.indigo

[Tim1]

On 5/19/2024 at 7:40 PM, sometimeshandy said:

Can I use the same power supply for a Cinema 1200 as the Bar 48? there are more wires (2 gnd-2 VCC 1 Stb then the 24v. ) 

I have the same question. It suddenly stopped working (Cinema 1200). 220V input required as I live in Europe. 

[skunkworks.indigo]

Welp, nope, these capacitors also look like the wrong size. Not sure how I am ordering these wrong.

 

The larger ones already in the board have different technical specs than the smaller capacitors ("820uf 35v" vs "1000uf 16v") but the ones I'm getting are the bigger size so I don't think they will work. 
 

Is there a spec that I'm missing in my search?

 

 

[skunkworks.indigo]

I just did some ol' fashioned measuring and hoping the next round that I ordered will be closer the 15mm diameter of the smaller two capacitors. The bigger ones are about 20mm diameter.

 

 

[Matt in LA]

Tim 1 - Welcome to the joys of owning these Klipsch Cinema sound bars! Bad power supplies!  I am guessing that you can't use the same Power Supply for the 1200 as was used here on the Bar 48. The PS for the Bar 48 was the same as used in the 600. My 800 has a different Power supply and I have not found one like it for sale anywhere. If my 800 is different (its bigger and powers the LED indicators) than it makes since that it is also different. Can you take a picture of it?

[Mainframer]

@Matt in LA

 

Hello! Same questions as tim 1.... Cinema 1200 that crapped out, no power/nada... was going to try this before the bin. 

 

I'd guess we want to know how many Amps this board outputs on the 24V rail... once we know that, we can, perhaps, find a suitable replacement if the ones that work for the 48/400/600 won't.

 

Here are a couple of images of the board in the 1200... I googled all of the 'numbers' on here and it really didn't yield anything.

 

EDIT: I see now there are a few more wires... damn......

 

FCC image, my PSU, close up...

 

 

Edited September 9, 2024 by Mainframer

[skunkworks.indigo]

For anyone new to the thread who's working with a Klispch soundbar model Cinema 600 and above (I'm working with the the differently shaped/additional LED display OEM power module in the Cinema 700), some key differences that have been found are: power routing for the LED display, and shape of the power module itself.

 

So if you get a new replacement board it will take some finagling in the case, which means either drilling new holes to fit the smaller square board shape, or just wiring into the board and leaving it loose in the case or securing it some other way. 

 

 

So I am not sure how the rewiring into the new, rectangular, power supply modules (from Amazon, etc), will work with the LED on Cinema 600 models and above. Which is why I'm attempting to replace a couple likely dead capacitors that seem to be the fault point/successful fix in several previous posts.  

 

 

 

 

 

 

Edited September 10, 2024 by skunkworks.indigo

[KevinB]

Has anyone tried to contact Klipsch Product Support and ask for help?

 

I know Klipsch doesn't repair customers' soundbars, but considering how we have all been impacted by the poor quality of the components in both the BAR series & Cinema series bars and the effort being made (as demonstrated by the posts in this thread) to repair them, perhaps they can provide help in locating replacement components or at least share the specifications for the existing ones. 🙄

[Matt in LA]

Mainframer - My 800 sound has a very similar Power supply to your 1200. There seems to be several bits (look above the transformer in both our photos) that you have in the 1200 vs our 800. Interesting. 

[OneBadZL1]

Has anyone had any luck with figuring out the wiring from page 3 of this thread posted by pconwell? I am trying to figure out what to do with the +/- 24v wires on the new power supply side. He mentions plugging the 24v into the relay, but where does the power supply come into play? Does it just get bypassed in this instance?

[OpalAcres]

Any luck finding replacement capacitors that fit the 1200 power supply? Mine popped yesterday. 

Edited September 14, 2024 by OpalAcres
Typo

[skunkworks.indigo]

Could you post a pic of your board? I've been hunting down capacitors that fit my 700 so I might be able to assist.
 

Dealing with Amazon has been hit or miss for me. You might want to check Mouser.com, the site has an easy way to drill down on what you need. Low or ultra-low ESR are better for longer life. Getting the size right is also important. 

 

[Cheetoh]

Well, My Soundbar just stopped working, no lights or anything. I'm not an electrician or anything so I hope I can fix it. I ordered the Amazon part. Any Pointers?

[ongtw75]

So, finally someone with the Cinema 800 requested my help to fix his. Just like everyone's 600/700/800/1200, the soundbar was dead, no power, no lights whatsoever.

 

As you can see from the photos below, the 800 has the same power supply board as the 700 and 1200 (at least visually). Most interesting that I saw the same bulged capacitor as in Skunk's. I do have some spare capacitors that will fit within the footprint.... replaced them and problem solved! 😁

 

New capacitors:

United Chemi-Con KZJ low ESR series, 1000uF 16V

To replace at C5 and C28

 

Alternative: 

https://www.digikey.com/short/bf43j7p0

https://mou.sr/3XB8SyT

 

When the old capacitors are desoldered, do try to remove as much glue as you can below them as that will aid in cooling for the new capacitors. 

 

When the power board is working, VCC will be 5.2V. STB will go from 0V to 2.8V when the soundbar is powered on. It is an enable signal to turn on the high voltage circuit (2 prong plug) and that in turn will give 24.5V.

 

In many ways, the 800 power board is very similar to the Bar48 and Cinema 600 boards. I didn't measure the current consumption of it, but looking at the 5V regulator chip (FT8370C) specifications, it is capable of 5V 3A. So a replacement board from Amazon/Aliexpress ought to have 5V/3A and 24V/4A dual output.

 

Hope the above info is helpful.

 

 

 

Edited September 23, 2024 by ongtw75
Updated photos and info

[Matt in LA]

Thanks for this ongtw75! I may try this!

[SteadyDropsofWater]

Ordered a couple of capacitors with your link there, thanks so much. 

Cinema 800 died - loved finding the information in this thread. Thanks to all! 

If I can fix this one, will end up with 2, which would be kind of cool. 

 

Will now learn how to solder lol 

[Matt in LA]

Keep us posted Steady.  My soldering is shaky at best so I'm in the same boat.