I have the same amp in my E64, but both the subwoofers wouldn't work and there was no bass at all. Everything else was workes, just no bass at all. For me (after tremendous blood sweat and tears), it turned out to be the negitive output for both left and right subs from the amp that are at fault. I used the center channels negative wire and replaced it with the subs negative lead, and suddenly I have bass. I did the same for the other side, and still used the center channels negative lead to the amp (but continued using the subs own positive wire). Nutshell: Bypass the negative wires for the subs, and instead tap in to a different speakers negative wire. To prevent any further strain on this already failing amp, i decided to use the positives from the L7 amp for the subs, and the negitve from the center channel to feed into a high level (speaker line, as opposed to RCA) into a second cheap amp to drive the subs. Working nicely so far. Hope this spares someone the pain I had to go through to figure this out. I really did not want to spend £350 for a second hand ebay one (which could well fail after a month). Apperently bmw will sell u a reconditioned L7 amp, but i never investigated that route. I still do not know what exactly failed in the amp to cause the no bass issue, but i know this workaround is going strong for me.
Do you know how it works in details? Do you know how fiber optic wake up circuit works? Can you read flash?? It's very sophisticated device and you should take care of it accordingly
Funny, just this evening I decided to remove my Logic7 amp and see if I could sort the problem it had.... Basically tore it down, found a little corrosion fuzz on the DSP board (the small square chips) some light scraping to mechanically remove the corrosion, then a liberal blasting with CRC cleaner.... plugged it back it to try it (this was the last-ditch before spending money on a replacement Logic7 amp) and it works! - Mine didn't have nearly as much water damage though.
Привет, нет усилители на пищалки находятся в самом головном устройстве, насколько помню, а в усилке низа силы и центр канал в панели. Так что подоткни Усил проверишь или магнитолу, ничего не случится с чужой не заблокируется и увидишь результат, ремонт там также отрезать и паять новую микру усиления
LOL wow, this is like ultimate troll level
I have the same amp in my E64, but both the subwoofers wouldn't work and there was no bass at all. Everything else was workes, just no bass at all. For me (after tremendous blood sweat and tears), it turned out to be the negitive output for both left and right subs from the amp that are at fault. I used the center channels negative wire and replaced it with the subs negative lead, and suddenly I have bass. I did the same for the other side, and still used the center channels negative lead to the amp (but continued using the subs own positive wire). Nutshell: Bypass the negative wires for the subs, and instead tap in to a different speakers negative wire. To prevent any further strain on this already failing amp, i decided to use the positives from the L7 amp for the subs, and the negitve from the center channel to feed into a high level (speaker line, as opposed to RCA) into a second cheap amp to drive the subs. Working nicely so far. Hope this spares someone the pain I had to go through to figure this out. I really did not want to spend £350 for a second hand ebay one (which could well fail after a month). Apperently bmw will sell u a reconditioned L7 amp, but i never investigated that route. I still do not know what exactly failed in the amp to cause the no bass issue, but i know this workaround is going strong for me.
Thanks for the info. Whereabouts are you based? Any chance of taking a look at mine? I’d be grateful.
Do you know you can check all the signals from dsp and other things? Or you just blindly reinstalled dsp, thinking it's the only issue with them?
Please tell how can I do this? Is there any video or article about it? I'm really intersted. Thanks!
Do you know how it works in details? Do you know how fiber optic wake up circuit works? Can you read flash?? It's very sophisticated device and you should take care of it accordingly
Me logic7 all works fine just front passenger door stop working sound the rest all ok i try to check door wire all good could be a amplif?? Any idea
have a look into that connector but I read something about that the High-tone speakers are directly connected to the cic
Cleaning it with a toothbrush helped me, so thanks👌
It got flooded again and now my toothbrush and isopropanol trick doesn't work anymore :(
Funny, just this evening I decided to remove my Logic7 amp and see if I could sort the problem it had.... Basically tore it down, found a little corrosion fuzz on the DSP board (the small square chips) some light scraping to mechanically remove the corrosion, then a liberal blasting with CRC cleaner.... plugged it back it to try it (this was the last-ditch before spending money on a replacement Logic7 amp) and it works! - Mine didn't have nearly as much water damage though.
the small square chips... are those chips 3 in a row close to the fan?
Так и делал
О привет славяни) а у тебя что было? У меня просто пропал один канал пища и соедний в двери молчат. Это мой случай на видео?!
Привет, нет усилители на пищалки находятся в самом головном устройстве, насколько помню, а в усилке низа силы и центр канал в панели. Так что подоткни Усил проверишь или магнитолу, ничего не случится с чужой не заблокируется и увидишь результат, ремонт там также отрезать и паять новую микру усиления
I've tried my best but failed to repair BMW Logic 7 amplifier. New videos on #Makerside channel every week!
Makerside how’d you safely pry off the dsp anyways