Hello guys
I have had over 5 amps lately for a repair based on the Tripath TA0103A chip, Impulse SD-1200, Phoenix Gold Tantrum 1200.1, Phase Linear Opus 1, US Amps and etc.
Same board same stuff, pictures in the link:
https://amp-performance.de/en/1222-Phase-Linear-Opus-1.html
All of them with a defective output section, some had output mosfets blow up, others only the chip was defective.
I've tried to order TA0103A from 2 different sources from China the chip, but sadly no avail, they were either fakes or blown up
Decided to open up one of the chip....i've found a few blown up transistors. Will try to read the markings and replace them. I know if the ics, big black blobs, are gone it's game over.
But as I have 5 of them just laying around with no other options, i don't have much to loose.
The only issue is that i don't know the values of the capacitors... I highly doubt there is a schematic for the Tripath TA0103A. I've read all of the threads over here about Tripath TA0103A.
Has anyone ever tried to repair one of those ? Any advice ?
I have had over 5 amps lately for a repair based on the Tripath TA0103A chip, Impulse SD-1200, Phoenix Gold Tantrum 1200.1, Phase Linear Opus 1, US Amps and etc.
Same board same stuff, pictures in the link:
https://amp-performance.de/en/1222-Phase-Linear-Opus-1.html
All of them with a defective output section, some had output mosfets blow up, others only the chip was defective.
I've tried to order TA0103A from 2 different sources from China the chip, but sadly no avail, they were either fakes or blown up
Decided to open up one of the chip....i've found a few blown up transistors. Will try to read the markings and replace them. I know if the ics, big black blobs, are gone it's game over.
But as I have 5 of them just laying around with no other options, i don't have much to loose.
The only issue is that i don't know the values of the capacitors... I highly doubt there is a schematic for the Tripath TA0103A. I've read all of the threads over here about Tripath TA0103A.
Has anyone ever tried to repair one of those ? Any advice ?
Attachments
When one of these goes bad, there's a 99.999% chance the FET drivers (epoxy blobs) are toast.
ALWAYS replace any blown FETs before attempting to use a new/good module or it will blow the drivers.
I have a good one somewhere if you're interested.
ALWAYS replace any blown FETs before attempting to use a new/good module or it will blow the drivers.
I have a good one somewhere if you're interested.
Shipping is going to be a killer....Can the FET drivers be replaced ? If I carefully clean up the epoxy, are the drivers an ic or a regular mosfet which can be bought (not something only tripath made) ?
Any advice how to check if the FET drivers are surely blown (which pin to which for short)
Any advice how to check if the FET drivers are surely blown (which pin to which for short)
Sorry, didn't see your location.
Measure from pins 20-21, 22-21, 25-26, and 27-26. They should all measure in the 3-7MΩ range. If one measures open-circuit or a significantly lower value, then it's dead.
I think the drivers are a Tripath part, but I can't say for certain. The epoxy is pretty much impossible to remove without damaging the board.
So far no luck...i've measured 4 chips...all of them show pretty the same.
20-21 -open
22-21 -10+MΩ
25-26 -10+MΩ
27-26-open
So sad i have to scrap 4 perfectly working amps except the TA0103A IC... I so much dislike all of the electronic waste we are making these days...