BMW car audio amplifier repair - draining the battery 

You are the only RU-vidr that when publishes a video I have to watch immediately. And you grab all my attention. Thank you.

Ive done some amp repairs. Usually its after market amps. People hook them up wrong or do not tune them right and end up blowing them. Then I would fix them and tell them to check their wiring and settings. Then they blow it again and accuse me of not fixing it right. So, I really scaled back on repairing them. There are a lot of people out there that think you can just hook them up and go. Thank heaven this is a factory amp.

Two videos per day from Sorin - what can be better?Thank you!

Thank you for your insight on audio amps, you're years of experience is priceless for us techs.

sorin we all love you i'm from Ethiopia i see allmost all your video i learn a lot you change my life thank you

Thank You for always sharing your expertise Sir Sorin!

Thanks sorin, some new appliance for us to learn. Thanks you legend.

TDA1565TH is the chip you need good luck finding it! also this amp is a class AB. I would swop the chip with the one next to it just to see because the fault could be with pin 2 mode/standby/operating mode circuit.

Sir.... before I even finish watching the video... thank you. From Trinidad and Tobago.

I have not seen a video from you yet that I have not watched all the way to the end. Love it! Keep em coming!

this was an interesting one! Do keep us posted on this one.. thanks Sorin..

Waking up to your vids are better than coffee lol. Ty.

Thanks Sorin , another great video .

Good stuff Sorin! Multumesc

Hello Sorin Yes watching you everyday from indian Ocean

Nice repair video

I’m still working on a thermo cam for ya my friend.

Hi. Shorted or burnt speaker will short that chip.replacing it will stop the battery drain.but before installing check the impedance on that speaker otherwise it will short that ic out again.nice video and diagnostic

These BMW cars have Bose speakers on them, so this amplifier may well be a Bose high spec amplifier too. Great videos, Sorin!

Great video, waiting for the update, i hope the customer wants it fixed xD

2 videos back on back, yes!

16:30 TDA1565 supply voltage is ~14v. it powers directly from the battery, thats why it drains current even with main power inverter turned off .

15:00 (expecting) let's modify it and use another common chip amplifier! 🤣🤣🤣

Thank you oh engineer

Sorin, it looks like TDA1565TH is available out of Hong Kong on eBay.

three in a row woot woot txs for share your knowledge, greeting and blessings from mexico city

Watching sir, from the Philippines.

Looks like pin2 controls the mode of the chip, perhaps pin 2 is shorted?

keep up the good work

New to electronic work/repair and have been learning a lot from your channel so thank you for that. What temps do you hot air? I saw your video on your old tool for manual hot air which was great and I know everything you said in that video about the hotter the faster the better but I seem to have a hard time. I hot air @ 390c full ait power and it still seems that the parts take a long time to come off. Not like yours as they seem to pop right off. Any suggestions or help would be greatly appreciated. Thanks again and keep up the amazing work.

Those chips are likely in standby, but the damaged one is shorted to the rails. Bad speaker maybe. I would not experement with that amplifier, it could become an expensive mistake :-(

Mr. Sorin's boss please buy him thermal cam, please, please. Invest little bit in this man's work. Or at least buy him hand burn cream :)

The amplifier has a separate power supply. The amplifier is switched on by the RAD_ON signal from the radio (> 8 V = ON / < 6 V = OFF).

There`s some of them on eBay,8-13.50$

very good

20:30 "Otherwise I can do some crazy things..." when the dodgyness switches on. :D Clearly at this time you cannot solve it without a donor or some dodgyness. :)

Better replace the chip if you find one. Otherwise leave it like this. But customer have to check his speakers and wires anyway.

Great tuition. Are you a qualified technician

exactly what i was thinking, where do you start, what direction.

Nice one

this is an interesting one please DO update us, especially if you are planning any dodgy stuff with the board if you put the channels of 2 speakers in series one with the other, would the amp be able to drive both?

Is there a short between the sense pin and 12V

Aliexpress has the tda1565th for sale

BD electronics, not sure if they have a min order but they have 12k in stock. These were discontinued in 2009 I believe.

cool. problem caught right away. all it took was a brunt finger : )

I have a high suspicion the installed speaker was flooded with liquid, as water damage that led to a condition as constant to ground.... short. I would be very curious as to operation via reinstall in end use. Was that as to an automobile? I hold the view, install of a new chip would be shown to new, unprotected ground and subsequent 2nd chip fail. I think a clear, repair as to device would be to cite, the potential for high heat, as to a consuming fire. Replacement of chip demanding discard of speaker . *replacement.(also)/ What an interesting repair problem. Please mention how the job was finished to customer need. M.

I think all automotive PCBs are coated, at least all the Mazda ones I have taken apart were coated

17:57 conformal coating.

JBL had the same problem in my '96 Town Car stock radio Battery post disconnect switch was my dummy fix 😂

I have seen same IC audio into the Bose 321 models, maybe can help you to find part for fix it, regards

scrapyard, whole amp costs like what $10-$15 USD?

Sweet

Teacher! 👍

Most IC's in automotive stuff is masked so searching for information on them is rather difficult. BMW especially has a lot of custom made stuff you cant really get anywhere. If its not masked is almost always obsolete. Aliexpress sometimes if you get lucky but if its not a commonly failing chip like injector drivers then even if you find one its probably something else and just labeled with what you want.

The timing couldn't have been better. "the current is just little bit, so how we can know.........." what is HOT!!!!

When one is blowup then the output is being wrong. One speaker making a short ? Like you show a little burnt connector pin.?

please more explination about serial mode and the ohms output ? in paper with diagramme if you can please thank you

Hi Sorin, Is it possible that the chip is still ok, but a surrounding capacitor has shorted?

strange it is always hot and not wired threw the ignition switch.

👍👍👍👍

0:53 Switching mosfet for remote , shorted Drain /source , ? , i continue listenig video :_)

look like resistor dried up first on side of chip

Disconnect or bypassed that factory amp, suggest the owner to upgrade to aftermarket 5 channel type of amp and the rest of the front and rear 2 ohms speakers to 4 ohms..

One of the speaker may be shorted. Therefore. The audio ic is defective.

I agree AliExpress for the chip

MOUSHER ELECTRONICS IN USA

"A thermal camera would be usefull, but we don't have something like that". Would an IR themometer somehow help in this instance?

What you need is a donor amplifier....

this one is sick lol

what is that liquid you poured on the chip at 11:53 ?

Hey Sorin try sonic electronics

Sir, one question, and i cant help not to ask you this one. What was your College course? You seem to know everything about electronics. I hope you can answer back, as Im planning to follow your footsteps. Thanks.

Covered with some special fingy lol

here in Brazil there's a lot of them on Mercado Livre, but... too far!

I want to be doggy like this man

I FOUND THAT CHIP ON EBAY

😍😍😍😍

Where is next vid???

Mouser Electronics.

Alliexpress has.

I still have some question Marks here...

Round of applause matey ! Bl**dy car electronics. Cheap and nasty construction and bad circuit design but high replacement prices ! I got a failed motorised temperature flap on a Skoda Fabia ventilation system . . drains the battery in two weeks. To change the ventilation flap motor, which itself costs £70 !, will involve removing a fair bit of the dashboard and cost £500 ! My solution, take out the fuse and, also, oddly, the diagnostic socket fuse . . . battery drain gone !

U can buy them on ebay for 14$.

hi Sorin, maybe buy a broken amp from ebay or maybe a car scrap yard

TH and not HT

You're putting TDA1565HT into google instead of TH.

Sorry for laughing when you burned yor finger

the chip was burned from too many manele.

2nd

I have a 2009 BMW Amplifier damaged by water. Are you interested in giving me a quote? Thank you

1st comment ✌️✌️

Try aliexpress

Defapt nu il au in stoc. Scuze

That amp is way by far too over engineered, it looks like it has own digital audio processing and DSP.