Testing Tripath TA0102A ?

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#22
Rabbi said:
When the module goes does it 100% take the fets with it?
Click to expand...


I have seen the module go south and leave the outputs just fine and dandy, but this only on the occasion that the gate drivers were not effected by the failure mode.
Shorted on board gate drivers and shorted fets are always seen to happen together, and even if the shorted output did not fail the module gate drivers outright, there will be significant DC offset with the new output fets and this indicates damaged gate drivers on the Tripath chip in my humble experiences.
 
#23
theAnonymous1 said:
The module is toast, I'd give up before you waste too much time and money. Even if you got it all fixed, there is a very high chance it will die again eventually.

Have you checked to see if the output FETs are shorted? If they are, the module is a guaranteed goner as well.

Here is something to keep in mind when messing with a TA010x amp.....

Good module + dead FETs = Dead module
Dead module + good FETs = Dead FETs
Good module + good FETs = One of the above eventually
Click to expand...

i hope this pic helps you a bit to see what is going on inside the module
Now , about the module itself, look here
BRAND NEW TRIPATH TA0104A - eBay (item 290523885345 end time Mar-17-11 18:01:27 PDT)

I do own a faulty amp like this but as Cervin Vega. In my case the windings of the toroid have burned. I intend to start a new thread to repair it.
However, if Rabbi needs some part values, i can hepl.
 

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#26
ultra said:
So, you confirm this pic is genuine !
great!
I think Resolute audio bought the rights to manufacture TA01xx modules.
Profusion plc still trades them.
Click to expand...

IIRC Cirrus Logic bought the intellectual property when tripath went under, and as of the last time I was looking for some (2 years or so ago) they had nothing in their product lineup and from what I understood, no plans to build them. Presumable they were after their smaller class D chips, but who knows.

Last I heard resolute has a limited stock of their 2500 module as well, because although they RE'd the Tripath module, they are still using a Tripath chip with a bunch of discrete drive circuitry. Look at the enlarged photo that was posted above, you can see the Tripath logo still.

I have a TA104A that I took apart-- its somewhere in my mad scientist lair. If anyone needs high res pics, I will try to get a few.

My understanding was all the TA10x modules were pin for pin compatible with the future generations with only minor changes to the supporting circuitry. Like said above though, I'm not really sure they are worth messing with unless you figure out how to fix the modules themselves. There are just not enough parts out there to make it worth while.

I have an audiosource AMP7T that the TA104A came out of. The amp is kind of rare, there was only one production run before Tripath went under and if I remember right they never did go up for retail sale, the manufacturer just liquidated the ones they had when Tripath closed their doors. Anyhow, I have held onto it for several years, I would love to get it up and running, and I know about Valecks modules on ebay, but for how many of these big tripath amps I have seen with bad modules, well, I can't see wasting money on the thing. Eventually I am just going to part this amp out for some projects. Sad, but such is life.

Later,
Jason
 
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