Contributor I

Dead Play:5 need schematics or tips

208 replies
59404 views

Hi

Play:5, manufacturing date sometime around 2009, is completely dead. No light in LED.

Found several cases of this online, but no solutions.

Does anyone have any knowledge about the problem, og better yet, schematics..

I mainly suspect problem in switch mode power supply. Have only done very basic measuring, but I find 220VAC on primary side, no power on secondary side. I think about ordering a mosfet, and/or a diode I suspect, but if I had schematics I could do some more pinpointing..

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timc995

Prominent Collaborator I

What is the nature of the repair that you did?

I have seen units that have one of the five audio amplification channels die. It is usually the bass that goes, if I recall correctly. That's what it sounds like your problem may be. There is no straightforward repair that I know of.

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Tobi82

Lyricist II

I have replaced the Fuse and the rectifier and it words. Additionally i have replaced the five 820uF capacitors and two others. Now all works, but only the right middle speaker isnt working. I cant see any damages and all resistors etc working. Can you give me a notice where the damage can be?

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Shamudi

Trending Lyricist I

Hi folks, the volume on my box is very low. I've already checked the resistors and changed the APM4307... but it's still very quiet.How do I recognize a defective transistor?And could someone tell me how big the capacitor C27861 is or which diode D27706 it is or how I can check,if the diode is defective?

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Shamudi

Trending Lyricist I

I tested the resistors in front of the Q27621, they are all ok. But D27721 has 0.5 V in the forward direction, the value keeps increasing in the opposite direction.Think it's broken. Does anyone know what replacement parts I need?

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Malgranda

Lyricist I

Hi,

This is probably the best repair resource for this speaker on the internet.

Just thought I should add to the repository.

The Switching ICs power was pulsing and nothing came out of the power transistor.
The problem was that R21812 was open, i stole a picture from this forum to circle the component.

Thanks to everyone on this forum.

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Tobi82

Lyricist II

My right middle Speaker is not working. What can i check? I dont find the fault

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timc995

Prominent Collaborator I

I have replaced the Fuse and the rectifier and it words. Additionally i have replaced the five 820uF capacitors and two others. Now all works, but only the right middle speaker isnt working. I cant see any damages and all resistors etc working. Can you give me a notice where the damage can be?

There is no easy way to find the problem that I know of. You will see that there are 6 similar paths through the image that you posted. One of these paths likely has a problem:

It’s been a while since I looked at this, but I think that 4 of these are for the 2 mids and 2 tweeters. For the last two (on the right by the look of it), there are two drivers for the woofer. You need to find the path that is for your bad speaker, and look at that circuit to (hopefully) find something broken. You can trace from the speaker to the white connector at the top of the image to figure out which path is broken.

I posted a long time ago an image on this board (probably this thread) where I found a broken traces which I fixed by bridging. You could have a similar problem, or it could also be a bad transistor closer to the capacitors. I think that there was a problem like this (a bad transistor) as well in this thread.

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torro

Contributor I

Hi together.

I managed to repair a play 5 with power poroblems. Fuse, Rectifier and Caps were good, so i checked the whole thread here and found the problem. R27794 and R27796 were open.

Now i purchased another one. Poor speaker quality.

Sub and one middle speaker are working. So i opened it up and found it pretty easy.

unfortunately, i don´t find those parts. Maybe someone could help?

Q27202 and Q27204 are done. some caps too.

Thanks

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timc995

Prominent Collaborator I

Sub and one middle speaker are working. So i opened it up and found it pretty easy.

unfortunately, i don´t find those parts. Maybe someone could help?

Did you mean that the sub and middle speaker were NOT working? Or that the other 3 weren’t?

In any event, I had a look on some dead boards I have. Those chips were marked G64 on the first board I looked at. That is a P-Channel Enhancement Mode MOSFET DMP3050LVT https://www.diodes.com/assets/Datasheets/DMP3050LVT.pdf