BM54 dead channels repair?
 

I've had no luck searching here or on Google. Has anyone located and repaired the common fault that makes the speakers stop working on the BM54s? I have a dead one I'd like to revive.

search on ebay.de, you will find a lot of audio repair kit's(great for diy), or just send your BM for repair; i did used an tda 7560 audio kit presoldered (brought from here:PSC-Audio | Module KIT | Module PsC-Audio | KIT127D - 4x34W (TDA7560), was about 19 euro shipping included) and, after about 3 labor hours BM was alive again, is not very complicated to do but you will need some electronic skills..

regards

Thanks dude, that's a great link. Shouldn't be a problem at all for me.

you are welcome m8, don't forget to supply at least 3.7V to MUTE and STANBY inputs :)

hint#1 cut ALL power supply lines to old amplifiers (from BM54)
hint#2 if you have bluetooth installed, you will need to feed the new amplifiers directly from old amplifiers inputs (after BM54 audio integrated switch) or you will loose BT audio function (i can send you pics about this subject)
hint#3 you cand find on BM54 board 2 lines originally used for mute and standby: better use these, will avoid annoying power up/down sounds...(i can send you pics about this subject)

regards

Yes please send the pics, will PM you an email address mate, and thanks!

Can you please send me pictures and the electrical scheme?

Thanks!

I could really use this pics from hint#2 and hint#3, therefore if someone have them, please send it to me.
Thanks!

PM me an email address and standby for data dump.

hy
 

hi @all
I fixed with "succes" a unit bm54 when i starting i have one secund a annoying noise, I think need to connect standby and mute
is someone kind enough to send me the foto with conection mute and standby?
i used this product for repair the unit bm 54
http://cgi.befr.ebay.be/ws/eBayISAPI...E:L:OC:BE:1123
thanks in advance for your help

my email adress it's [email protected]

Can somebody help me with this too

thanks

ac427

Please send me pictures too. PM sent.

BM54 repair kit
 

For those with very little soldering skills and electronics knowledge, I found this kit (in Europe): Becker BM54 repair KIT.
I ordered one and will let you know how it goes.

Additionally, it would be most useful for me to have these photos to fix bluetooth and pop issues.

PM me please.

Thanks

Hey guys love the thread can you also send me pic as well thanks

Bypassing the amp stage seems rather easy, with a tiny integrated amp as the one I've ordered. But if you have a bluetooth phone things are getting (for me) more complicated. I can send you pics to your mail address.
A step-by-step diy, with photos, would be most useful for ordinary people, like me, who doesn't want to spend another $800 on an already expensive car, just because my favorite music only comes from the opposite side, since the driver side is mute and dead...

I do repairs on bm54 units.

I have been doing it awhile, and I have bought and used a lot of different kits and methods.
The instructions that you will get from buying a kit from a company is bad. And in most cases, it will either overheat your unit, or you will end up cutting the traces too deep, and completely mess up the bm54 unit!

The repair kit posted above, is not the best kit out there. The one I use, has a heat soak, which the new amps sit on. It keeps the amps nice and cool, especially as the newer amps produce more power, at 40watts x 2, instead of the standard 20watts x 2. The sound is dramatically improved.

I do not charge much, and the turnaround is no less than 24-48 hours, depending on whether i recieve a unit before 1pm.

My most popular customers are X5 owners, as the placement of these units next to the battery was stupid by bmw. However, i have had guy with a 3 series convertible, who had the car garaged from new, and his unit was toast, but not beyond repair. Even the coupes and verts, the bm54 is placed next to an air vent in the boot.

So if anyone is interested, send me a pm, or email me on [email protected].