As the title says I am in search of a service manual for the Behringer 2030a.
I am about to attempt a repair on behalf of a friend who owns them already!.
I am well aware of the mixed reputation of Behringer and the limited value of the speakers (I myself use Focal Twin 6s with a Focal Sub), but I am interested in helping a friend and keeping these out of the landfill.
Issue is a loud 'pop' on power up in one of the speakers.
I am trying to plan my approach as much as possible prior to taking possession of the speaker and opening it up, and if possible put in a Mouser order in advance. Even photos of the board would probably help. (power cap dimensions would be sweet).
There are plenty of schematics on line for another speaker in the series, 2031, but none that I can find for this one which uses a different ST amp-on-a-chip. My understanding is it uses a linear bipolar +/-15VDC power supply, a bunch of low grade op amps, followed by two TDA7293s.
Plan of attack,
1. Check vRegs (believed to be 7915 and 7815) and replace and add heat sinks (~$3.00)
2. The TDA7293s have a mute/standby function and I am interested to see how it is implemented in the 2030s. Possible source of failure could be the timing caps or associated resistors? Probably SMD ($0.01).
3. Look for profound failure of no-name power supply caps?
4. Any other constructive suggestions???
I have already read two other (long and painful) threads dealing with these speakers and potential mods which are almost entirely devoid of factual information, so no, sadly nothing helpful there. And yes, I have data sheets for the TDA7293s, which will help in the absence of the actual schematic.
Thanks in advance!
Ian
I am about to attempt a repair on behalf of a friend who owns them already!.
I am well aware of the mixed reputation of Behringer and the limited value of the speakers (I myself use Focal Twin 6s with a Focal Sub), but I am interested in helping a friend and keeping these out of the landfill.
Issue is a loud 'pop' on power up in one of the speakers.
I am trying to plan my approach as much as possible prior to taking possession of the speaker and opening it up, and if possible put in a Mouser order in advance. Even photos of the board would probably help. (power cap dimensions would be sweet).
There are plenty of schematics on line for another speaker in the series, 2031, but none that I can find for this one which uses a different ST amp-on-a-chip. My understanding is it uses a linear bipolar +/-15VDC power supply, a bunch of low grade op amps, followed by two TDA7293s.
Plan of attack,
1. Check vRegs (believed to be 7915 and 7815) and replace and add heat sinks (~$3.00)
2. The TDA7293s have a mute/standby function and I am interested to see how it is implemented in the 2030s. Possible source of failure could be the timing caps or associated resistors? Probably SMD ($0.01).
3. Look for profound failure of no-name power supply caps?
4. Any other constructive suggestions???
I have already read two other (long and painful) threads dealing with these speakers and potential mods which are almost entirely devoid of factual information, so no, sadly nothing helpful there. And yes, I have data sheets for the TDA7293s, which will help in the absence of the actual schematic.
Thanks in advance!
Ian
Hi:
I am also in the need of the service manual or at least the schematics of the B2030a, did you get them?
Thanks in advance.
I am also in the need of the service manual or at least the schematics of the B2030a, did you get them?
Thanks in advance.
Hi,
I can provide you with the schematics, drop me a mail.
As for mods, if you understand french I advise you to watch this
I have implemented the DSP according to the contents of this video, result is just astounding. My reference speakers are PSI A25-M, I assure you the Behringers aren't ridiculous at all after the modification. Check here https://drive.google.com/drive/folders/11vPjZ7v3jFO7lpEEpZ3NxutnQF5z6I6-?usp=drive_link
T.
I can provide you with the schematics, drop me a mail.
As for mods, if you understand french I advise you to watch this
I have implemented the DSP according to the contents of this video, result is just astounding. My reference speakers are PSI A25-M, I assure you the Behringers aren't ridiculous at all after the modification. Check here https://drive.google.com/drive/folders/11vPjZ7v3jFO7lpEEpZ3NxutnQF5z6I6-?usp=drive_link
T.
Hi Thmartin,
Thank you very much for sharing such valuable data.
Sadly I do not speak French; but I will look for a way to translate it.
I purchased a pair of B2030a with a malfunctioning unit that I will receive today, so I want to fix it first and then I will look for improvements, DSP is a good alternative.
Regarding the schematics, I found online the B2031a not the B2030a; but I guess they are very close.
Best regards
Anibal
Thank you very much for sharing such valuable data.
Sadly I do not speak French; but I will look for a way to translate it.
I purchased a pair of B2030a with a malfunctioning unit that I will receive today, so I want to fix it first and then I will look for improvements, DSP is a good alternative.
Regarding the schematics, I found online the B2031a not the B2030a; but I guess they are very close.
Best regards
Anibal