BATC Forum

Hi,
I am struggling to get the additional PSU for the LNB working.
I tried all combination of settings in the winterhill.ini, but I am unable to measure any useful voltages at the f-connector.
PICs seems to be OK. No probs reported,
R4 and 5 are on the PSU board.
Direct connect via the jumper gaves 11,75 V (I am using a 12V supply, not 13,8V.)
So I guess I made somewhere a mistake during assembly or got a faulty component.
Is where any hint how to test those PSU separately?

Thanks
Rainer

Hi Rainer.

If you have just one LNB pcb, is it in LNB_X position - the right hand position of the 2 LNB pcb positions? The components (except the one on the back) should be facing towards the PICs.

Has the RT5047 chip been soldered to the ground plane underneath?

Check that the correct signals are being sent to the LNB pcb. For LNB pcb X, PIC_A, pin 2 enables the pcb and PIC_A, pin 3 selects 13v or 18v. Both signals are 3.3v active high.

To test the LNB pcb outside of the WH, you would need to attach a 12v supply to it and also 3.3v on the enable pin. Be careful not to short any pins on the LNB pcb, due to the mixture of high and low voltages

Brian

Thanks Brian for your reply.
I´ve checked your points against my PCB, unfortunately I was unable to make progress.
The Hi/Lo are measuarable, so from this point of view it should work.
Operating power is also ok.

So it seems that some part of the component fails.
Bad luck.

Next time I will use some kind of removable connector to avoid desoldering the additional PSU, was a little nightmare.

Maybe I am switching to the proposed solution to add a simple step-up converter for 18 volts and use a switch for off/12V/18V.
It easier and cheaper to get as the BATC PSU after the Brexit....

Thanks again Brian.

vy 73
Rainer