MTH TIU fails every time when trying to update the software to 6.01

I've been down this road before.

Question: If you just try to power it up without any cables other than power, how many blinks do you get on the internal LED?  I just had a Rev. G one that I tried to update from 2.xx, and it turns out it has a memory problem and was blinking a random number of blinks for the TIU #.  That's a memory issue and pretty much non-repairable.

Tether the TIU to the remote with a phone card and try the reset again. By older TIU do you mean REV. G? I've seen buggy issues with these TIUs that can cause some wired problems. In most cases the TIU was damaged due to a short which lead to to these problems.

When I power it on by itself the light comes on but no blinks.  When I tether the remote to the TIU i receive a TIU error when trying to reset it or obtain the TIU version. As for the version it does not have a version sticker on the bottom of the TIU. It has the Proto2Sound logo on the top and not the DCS logo.

Also, when I try to do the update it looks like the light stays on until it gets to a point where it errors out and then the light continues to blink pretty fast.

So it's a REV. G. The no blink will occur when the stereo audio cable is connected to the TIU in the MIC & Protocast ports.  In order to do the reset, make sure the stereo cable is disconnected before you turn it on.

I tried that and it still says TIU Error. It will not add it or factory reset nor display a version number.

Yeah, your TIU has more serious issues, most likely bad memory. It being a REV. G, it may not be worth fixing.

So if you just power the tiu via fixed 1 with nothing attached does the LED come on?  Does it blink?  If no try powering via AUX power does it ligth now?  G

It lights steady, no blinking when I power it using the Aux input port. I will try the fixed voltage in 1 and let you know.

When I use the fixed voltage in1 the light comes on with no blinking but I could smell an electric burn type smell. Not sure what that is as I checked the wires and everything seems fine, circuit breaker did not open.

Hi, I'd bet if you take your tiu apart and remove the board and look at the bottom of the board you'll see burnt board and traces in that case it's toast!

Alan

If it does not blink could be memory, or could be some other short that is dragging the 5V buss down.  So processor and such not working.  Specially with a smell, probably 5V regulator over heating.  I would say move on personally.  Replace the TIU.  G