I (somewhat foolishly) accepted a job repairing a Bose Wave Radio Series 1 from a lady customer. I was reluctant, but she insisted. This was back in February.
The customer's friend had disassembled the radio, removing the speakers, because it buzzed and they though the speakers were bad. LOL
At any rate, she said that it was working fine til she unplugged it in one room and plugged it in another room. Then it started to buzz loudly.
I fixed the buzz by replacing the IC power amp chip. But now the radio is silent, except for a tiny bit of hiss when the volume is at max.
Nothing gets from AUX in to AUX OUT jacks. I have the 1996 schematic, but that area by the small signal stages differs greatly from the physical circuit board. Part designations are 400 series on schematic, but 200 series on the PCB. And there's no source select IC that matches the schematic part number. The IC next to the volume control IC is a quad op amp, where on the schematic it's source selector IC.
One or more of these ICs also fried with the power spike when the radio was relocated and plugged in.
I've spent hours scouring the internet for information. I've got too much time invested to just give up now. Awkward situation. I will firmly refuse to work on anything Bose from this day forward. Not worth the hassle!
The customer's friend had disassembled the radio, removing the speakers, because it buzzed and they though the speakers were bad. LOL
At any rate, she said that it was working fine til she unplugged it in one room and plugged it in another room. Then it started to buzz loudly.
I fixed the buzz by replacing the IC power amp chip. But now the radio is silent, except for a tiny bit of hiss when the volume is at max.
Nothing gets from AUX in to AUX OUT jacks. I have the 1996 schematic, but that area by the small signal stages differs greatly from the physical circuit board. Part designations are 400 series on schematic, but 200 series on the PCB. And there's no source select IC that matches the schematic part number. The IC next to the volume control IC is a quad op amp, where on the schematic it's source selector IC.
One or more of these ICs also fried with the power spike when the radio was relocated and plugged in.
I've spent hours scouring the internet for information. I've got too much time invested to just give up now. Awkward situation. I will firmly refuse to work on anything Bose from this day forward. Not worth the hassle!
I have the series 1 schematic in front of me (1994)-
bose wave radio - Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics
Scroll down to download.
bose wave radio - Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics
Scroll down to download.
Thanks for that link! Somehow this defied by Google-fu.
Can't get any help from Bose if you're not an authorized service outlet for them.
Can't get any help from Bose if you're not an authorized service outlet for them.
As well as DDG I use a small German search engine for technical searches .
No different in the UK when it comes to certain electrical products .
No different in the UK when it comes to certain electrical products .
Elektrotanya is always a good place to look for schematics, they seem to have several editions of the Wave Radio:
Service manual, eprom result list | Elektrotanya
Service manual, eprom result list | Elektrotanya
I used to use Elektrotanya a lot. But their website never remembers my login ID, so I have to create a new account every time.