Originally Posted By: Hoffy
This one is for Johhny B.

I've been measuring voltages from the PSU whilst doing some of this.

With the PSU connected to the motherboard and all running, I measured all the voltages on the main connector. Pin 4 is reading 3.337V when running and connected to the motherboard. This is the 3.3V input required to switch Pin 3 to the 6V+ ? I should be getting 6V+ like this?

Is this correct or does it work differently when connected to the Motherboard?

Hoffy.


Pin 3 must normally have around the 6v, and it's used for the tuners.
If this collapse lower than 5v, the tuners will not work.
Why can it collapse?, this psu circuit has a overload protection, if it must deliver a higher consumption than normal it will collapse.

Reason can be, bad tuner, bad dc to dc chip, bad cap etc..
Other reason can be, psu issue, mostly cap problem.
In any case, it's hard to say what it can be without some good measurements.
However it's hard to say if it's really a hardware failure, but I had a case that the box failed on two extra tuners, but works fine with one.
The psu voltage were fine, but with another psu the problem solved.
Never found why.

Issue,
DVB: registering adapter 0 frontend 0 (bcm4
(Philips TU1216-DVB-T) tda10046: chip is not answering.

Versus TS,
(Philips TU1216-DVB-T) Philips TDA10046H DVB-T

Although both have the same chip set, yours could be different.
Maybe it has to do with,
TDA10046
TDA10046H

Maybe to see on the present parts on the top side.
I any case your tuners doesn't give a response to the request.
Which I think, but not sure, can happen if it are newer tuners. for, 800hd/800se
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Johnny B.

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