Hi Everyone
I was using this module in a Professional Audio Subwoofer. One day it blew and certain small components were burnt such that they are unidentifiable. I am a certified Electronics Technician and would like to have the chance to repair my module,. If you have this module in your equipment and you would like to help, please help me identify the following parts. I need to know the values/part numbers of the following components:
TRANSISTORS
T503, T506, T509, T511
DIODES
D502, D504, D506, D508, D520, D522
IC'S
IC501, IC505
RESISTORS
R500, R507, R511, R520, R527, R576*, R573*
CAPACITORS
C138, C205, C229
Thank you for reading. Let me know.
I was using this module in a Professional Audio Subwoofer. One day it blew and certain small components were burnt such that they are unidentifiable. I am a certified Electronics Technician and would like to have the chance to repair my module,. If you have this module in your equipment and you would like to help, please help me identify the following parts. I need to know the values/part numbers of the following components:
TRANSISTORS
T503, T506, T509, T511
DIODES
D502, D504, D506, D508, D520, D522
IC'S
IC501, IC505
RESISTORS
R500, R507, R511, R520, R527, R576*, R573*
CAPACITORS
C138, C205, C229
Thank you for reading. Let me know.
TRANSISTORS
T503:
T506:
T509:
T511:
Seems like they are all marked "718" some (most) of them are completely impossible to read.
DIODES
D502: ON J49 U1J
D504: Most likely A6
D506: Most likely A6
D508: Most likely A6
D520: Where is it?
D522: 440A 8FIXD
IC'S
IC501: 1811 TNY278GN 7A421C
IC505: Where is it?
RESISTORS
R500: Where is it?
R507: 10RD
R511: 10RD
R520: 22RD
R527: 22RD
R576*: Where is it?
R573*: Where is it?
CAPACITORS
C138: Where is it?
C205: Where is it?
C229: Where is it?
Unable to find C229 but R229 is 10RD
Hope this helps, it's been well over a decade since i worked in a lab with stuff smaller than this but nowadays it's just a non-priority hobby so no microscope or fancy equipment anymore.
T503:
T506:
T509:
T511:
Seems like they are all marked "718" some (most) of them are completely impossible to read.
DIODES
D502: ON J49 U1J
D504: Most likely A6
D506: Most likely A6
D508: Most likely A6
D520: Where is it?
D522: 440A 8FIXD
IC'S
IC501: 1811 TNY278GN 7A421C
IC505: Where is it?
RESISTORS
R500: Where is it?
R507: 10RD
R511: 10RD
R520: 22RD
R527: 22RD
R576*: Where is it?
R573*: Where is it?
CAPACITORS
C138: Where is it?
C205: Where is it?
C229: Where is it?
Unable to find C229 but R229 is 10RD
Hope this helps, it's been well over a decade since i worked in a lab with stuff smaller than this but nowadays it's just a non-priority hobby so no microscope or fancy equipment anymore.
If all else fails, contact Pascal. They are very helpful and friendly people. I had an issue with an SPRO2 and they sent me specific repair instructions.
Hope you get it sorted, they are very nice modules.
Hope you get it sorted, they are very nice modules.
Thanks for the response. That's the first thing I did. I contacted Pascal and they wrote this:
"Hi,
Sorry to hear you are having problems with one of our modules.
Unfortunately, we are not allowed to service our clients' customers. You would need to contact the manufacturer of the speaker/subwoofer. We only sell to OEM manufacturers in large quantities.
Kind regards,"
So I wrote to the OEM supplier of my subwoofer, Audiocenter and their response was:
"Hello,
Thank you for your email. Which country are you from? and from which company did you buy TS-118 subwoofer？TS-118SW is a terminated model for long time. Pascal didn't offer us the amp module circuit diagram and components breakdown. Sorry that we can't offer what you need. We suggest you contact with the company that you bought the speakers and get help from them. Sorry, Pascal don't provide maintenance service, so we have to replace the whole amplifier module when it's broken.
Best regards"
That is why I am trying to fix it myself you see.
Hi Thabto, how its going?
Did you finally repaired your module?
I have one on a Das Audio Vantec 18a and it burned out due to high voltage…
Can’t find any transistor burnt or something. I wrote to pascal and their response was the same as yours (copy paste)…
All resistors are ok and Dsp module is working fine so voltage is going thru the pascal module, but it doesn’t work.
I think the main failure is on switching IC’s UCC2893D and IRS21867S.
Did you found a solution?
Greetings!!
Did you finally repaired your module?
I have one on a Das Audio Vantec 18a and it burned out due to high voltage…
Can’t find any transistor burnt or something. I wrote to pascal and their response was the same as yours (copy paste)…
All resistors are ok and Dsp module is working fine so voltage is going thru the pascal module, but it doesn’t work.
I think the main failure is on switching IC’s UCC2893D and IRS21867S.
Did you found a solution?
Greetings!!
that's exactly the answer i got when i asked them.🙂
feels like a small chance that someone who happens to want to share it anyway .
feels like a small chance that someone who happens to want to share it anyway .
Hi guys!!
I've replaced UCC2893D and IRS21867SPBF.... Well that wasn't the issue... Amp is on mute mode... that you can read 3vcc more less
I've replaced UCC2893D and IRS21867SPBF.... Well that wasn't the issue... Amp is on mute mode... that you can read 3vcc more less