Just noticed the DSP shows the Dolby logo and DTS. It's not mentioned in the manual, but it may support DTS. I will try it out later. Thanks again for your vids.

@razenby

5 жыл бұрын

Lat us know. Thanks.

@jasonpaulwilson76

5 жыл бұрын

@@razenby I connected my MacBook to the Bose via an optical cable/spdif and playing a DTS and DD trailer with a 5.1 track via VLC, there is sound. Looks like the Bose plays DTS 5.1 as well as DD 5.1 (although in 2.0). Bit of a bonus :)

@razenby

5 жыл бұрын

Interesting. I wonder if these formats sound better in these formats through the Solo than straight stereo??

@jasonpaulwilson76

5 жыл бұрын

@@razenby Unfortunately, no DTS support. DD is ok. I used a soundbar to check DTS was outputting and it wasn't (it was PCM). Changed to Audio>SPDIF via VLC and DTS was being output. Connected to the BOSE and no sound. DD Yes, DTS no. Shame as the chip is capable.

@razenby

5 жыл бұрын

Noted, Thanks.

I have just been looking at a similar problem. Power supply is giving 24V. All power supplied appear to be correct to the processor section but there are no LEDs on. Remote signal gets through to the board OK. Clocks are all correct and there are bursts of signals on the Flash chip. Getting '

@razenby

Жыл бұрын

The Texas DSP chip is probably OK but it is all about the timing. I managed to resurrect some Bose products with an emulator via JTAG. I haven't had time to do a deep dive on this product. If there is a boot loader present I haven't managed to find the code in the FLASH. The DSP is a BOSE custom part number which is not recognised by my development system and it wont cooperate. Likely Flash corruption. It is probably a standard TI part with a custom ID blown into it. Check 1.7V and 3.3V relative rise times VS reset.(See generic datasheet for the DSP). On some you can get them to boot up by holding them in reset longer or slowing down the rise of one of the DSP power rails. Usually if you warm it up and it starts OK it is an indication that the latter approach may work at room temp. Good luck.

@stevehorton8889

Жыл бұрын

@@razenby Thanks for the feedback. Unfortunately, it will probably be returned to customer as not repairable unless I get inspiration before the weekend. Shame, as I think that the hardware is all good! I seem to get a lot of this type of problem turn up where all the signals and power are good on the processor but the processor does not appear to be running any code.

Magic Smoke, I have the same Bose Solo TV Speaker main board that you are working on in this video. The problem with mine is that I am not getting any power into the unit. As I plug the unit in, I get nothing, no sound, no lights, no nothing. Bose says they no longer support this product and I feel that perhaps the problem may be a simple power supply component that has gone bad keeping the 120 v from moving through. I work in Biomedical Electronics but I have been unable to find a schematic or enough information concerning my main boards issue in order to locate the faulty part. Can you help. Thanks Brandon

@razenby

5 жыл бұрын

Subscribe to my channel to see the other detailed video - the power supply section and how to fix it is explained and what you need to check change is detailed too. There are no schematics that I can find but I have repaired a lot of them.

Would you happen to have any repair info on the Bose Cinemate home theatre system? I believe mine is the old original Cinemate 1. It does not have a separate power supply board like the Cinemate II and the power transformer connects directly to the main board. On the back side there is only the power cord and 2 9-pin serial cable like connectors, one for the speakers and the other for the interface and no volume control for the sub like on the newer models. As far as I can tell, the power supply section is working as I'm getting 5V and 3.3V in the digital section but the issue I'm experiencing is that the interface unit LED is not lighting up at all. It's supposed to be Red in standby and Green when on, and there is absolutely no response from the IR remote control at all, which is the only way to turn it on. I've verified continuity in the cable and the indicator LED is pretty much a direct connection to the main board. Based on another KZreadrs suggestion, I also tried replacing the IR sensor to no avail. I can't even find as much as a schematic or service manual online. Please let me know if you have any info or suggestions. I would greatly appreciate any assistance. Thanks!

@razenby

7 ай бұрын

Sound like it isn't booting. Check for what Bose call dendrites on the Sound processor board. These aren't really dendrites but just bad board manufacturing due to lack of cleaning. Tiny brown stains or crusty bit that don't belong. If you see any check the continuity if you can determine where they go. Usually on power rails. These show up as brown stains around via holes. Locate the electrolytic decoupling capacitor of the 1.7VDC DSP core supply rail to the DSP and change it. There is a SMD choke in the power line that gets crusty dry joint. Stop the main clock on the DSP until the power has stabilized and see if it boots.

Do you have any idea where I can get the whole circuit assembly for a Bose Companion 3 ser.1 subwoofer? Mine quit putting out on the left satellite speaker. (I get reply notices on my phone)

@razenby

4 жыл бұрын

No sorry.

hello I have a question I have a resistor which is out of order but I no longer see the value it is next to the diode bridge please

@razenby

Жыл бұрын

What is your email address? I will send you the service manual pdf.

Do you think the problem is laying inside the main IC chip? I found exactly the same chip on the internet and I'm keen to try to change it. At least it will be a good soldering practice to solder 100 pin chip imo. My unit is not turning on at all. It has 3.2V on 6th pin and after pushing the remote button it is dropped to 2.4 so I assume the signal is correct.

@razenby

2 жыл бұрын

Most likely the flash memory.

@vbogoev

2 жыл бұрын

@@razenby thanks for the fast reply

Just released an update video with a detailed repair of the DSP side.

@silviuguseila2552

4 жыл бұрын

Might wanna post a link as well, I for one cannot find, or maybe group all the Solo TV videos under a playlist.

@silviuguseila2552

4 жыл бұрын

Or was that video taken down?

@PabloMQ

4 жыл бұрын

I want a link to that video too! It doesn't seem to be on your videos list

@andreasmierzowski4277

3 жыл бұрын

Hello, I exactly have the same Solo Tv sound system with the same Mainboard and the issue is really similiar. I have the 24V DC available at the output of the power supply and also the input from the IR-receiver on the microcontroller (pin6) is perfectly working (perfect signals measured by oscilloscope). Also both crystals are perfectly working with the correct frequency and a fine sinusiodal signal can be measured. Nevertheless the Soundbar unfortunately doesn't start up at all (no LED, no sound, also no flickering noise, absolutely no startup reaction). Therefore I am also searching for your proposed video with the solution of your repair. What you also mentioned is a bias-voltage that can be adapted. Where to do so? I haven't been able to find the mentioned videos. Can anybody please provide any hint what else I can try to get the device working again? Thank you very much in advance.

@stuie25

3 жыл бұрын

@@andreasmierzowski4277 i have the same as well, have 23v but no startup , led nada.

Exactly same problem with mine, power seems ok, crystals seem ok (afaik), some minor activity on few cpu pins, but appears to be dead (no light, sound). Any suggestion would be awesome!

@razenby

3 жыл бұрын

Hi Ivo. The modification on the video fixes about 50% of units. I have a few here that still don't work but I haven't had time to investigate further, When I get around to it I will release a new video.

@ironirc

3 жыл бұрын

@@razenby Thanks! I suppose you are referring to replacing the crystals and adding the capacitors, as shown in another video. Is this correct? kzread.info/dash/bejne/nomum5dmpNCWkrQ.html

@razenby

3 жыл бұрын

@@ironirc yes

@mrbanana779

Жыл бұрын

Did you manage to resolve this? I have a unit with the exact same symptoms!

@ironirc

Жыл бұрын

@@mrbanana779 I think replaced some components as mentioned above, but sadly it didn't resolve the issue... In the meanwhile I disposed the device.

Model-328040 in power supply one IC punctured therefore could not find the number of ic. It is printed side 14 pin. Can you send the number of IC?

@razenby

3 ай бұрын

What is the IC designation - is it marked on the board?

@kishorshinde3407

3 ай бұрын

IC POSITION U2003 14 PIN

@kishorshinde3407

3 ай бұрын

Can you send me mail id?

One more question, you mention "I can force it to work by bypassing..." How do you do that exactly? That's something I would like to try...

@razenby

3 жыл бұрын

What are you seeing? Do you have a power fault or a DSP fault?

@ironirc

3 жыл бұрын

@@razenby power seems OK... Clocks seem OK too. Some activity on cpu ports.. but further no sign of life. No led or sound

@GiovanniPreda

3 жыл бұрын

I'm having the same problem. Power rails ok but not turning or nor making sound. Do you have any updates?

Hi Magic Smoke Please can you tell me do you find the problem why the bose not starts 24 volt is ok Best greetings from germany Jacky

@razenby

Жыл бұрын

It could be a number of things. Usually bad stat up timing on the 1.7 and 3.3V rails to the DSP. Have a good look around. Replace the smoothing (reservoir) capacitors on these rails.

@fabiobrasca619

Жыл бұрын

On pin 9 of the integrated circuit Fan7384 there are connected a 0603 resistor with an sot323... Can you tell me the value of this resistor please?

Dont seem to be able to find the follow up video to this? My Solo is very temperamental about turning on. Sometimes you'll plug it in and there's no beep, others you'll plug it in and it'll work fine, others it'll beep and turn on on, green light but no sound and then won't turn off

@razenby

3 жыл бұрын

It is in the video camera. I have the development software for the DSP but haven't had time to truly solve this issue. I am dong a design project at the moment. I'll get back to it when I have some time.

@dazmatic

3 жыл бұрын

@@razenby so I eventually got round to replacing the crystals in my Bose solo and it has sprung into life so I'm quite pleased, thanks for the info.

@dazmatic

2 жыл бұрын

And now it's dead yet again. I think it's the resistors being the crystal, one of them looks discoloured and is reading shorted.

@dazmatic

2 жыл бұрын

Nope, wasn't them. Tried heating the main DSP with a reflow station to warm it up, plugged in and it beeped. So, next step is to reflow the DSP pins.

@dazmatic

2 жыл бұрын

tms320da810 is the DSP I believe

Can you have a motherboard repaired by you? Bose no longer offers support in Germany. thanks

@razenby

4 жыл бұрын

A description of the fault would be useful. If the ~23V DC is missing measured across each of the six capacitors in the lower right-hand-side power or the Sound section then this is a straight forward repair. You can contact me at ark.mail@virgin.net

Is there a point were you can short it and start it up?

@razenby

2 жыл бұрын

Not to my knowledge

@fabiobrasca619

Жыл бұрын

On pin 9 of the integrated circuit Fan7384 there are connected a 0603 resistor with an sot323... Can you tell me the value of this resistor please?

my bose cinemate 1 sr, din't start up , the connection it is ok bud any light is on

@razenby

5 жыл бұрын

Without getting my hands on it I cant really say if it is the power supply side or the DSP side that is causing your problem. Any ideas ? Anyone??

Could you please contact me with an email address if possible. This is regarding the processor side. I have made some diagrams that may help, but this has sent me to the Asylum. Thanks

@razenby

4 жыл бұрын

I am about to revisit the processor side and fix the bugger once and for all. Would be interesting to see: ark.mail@gmx.com

manufacturers creat problem to customer to increase sale ..... busted thinking person bose

@razenby

Жыл бұрын

I am not sure that they are that clever. They incur a great deal of warranty costs and a somewhat bad reputation. Having managed a team of development engineers for nearly 20 years, I would say they often don't do reliability testing , do the math and have their designs appraised. Often I can spot the likely fault causes just by looking at the schematic. It is that simple.