Re: Lg 32pg6000

removed the y board.
Interesting for me, I can see that I am getting the same short (24ohm) in either direction on a track that has two diodes and resistors running in parallel on the buffer side. I would have thought the idea was to provide some resistance in one direction, and very little in the other. But it is exactly the same in either direction. Maybe needs investigation? Maybe the sort of thing that catches noobs out making them think they have tracked the fault down? We will see.

Re: Lg 32pg6000

OK, gonna remove the caps first as it will aid access anyway.

Re: Lg 32pg6000

LOL.

OK, Tomorrow I start to take out the transistors and test them, or buy another t con, or freeview (currently have it connected to ESPN Caribbean downlink, hang on, nah its not that).

I do not personally think it is the PSU, but I will see if I can beg a hair dryer off one of the neighbours. In an insane way I really want to start pulling these transistors and testing them now though.

Re: Lg 32pg6000

Thanks for the reply Andrew. The main board keeps calling my attention too. Saw a control board for really cheap, bought that, didn't fix. Changed a few typical capacitors on the power board, didn't fix it.

I am going to pull the mainboard, test it, and then store it if i can not get it working until a reasonably priced one comes available. Might try serial cable to see if I can somehow communicate with it, if I can then I will try to inject firmware. Other than that, its on hold.

Re: Lg 32pg6000

VSC is reading low. 114v instead of 135v.

Does this indicate Y-sus problem or is it more likely to be the power supply?

Re: Lg 32pg6000

Today I placed a 200w load on the PSU, isolated from the ysus, still connected to the mainboard though, and it seemed to hold.
M5V on the socket to the ysus kept cycling though, between 5v and 0, for about 8 seconds each. Is this normal behaviour?

With the load off, I disconnected the mainboard from the controller board and reconnected ysus/zsus, it did not trip off with the mainboard - controller board lead out of the circuit and this gave me chance to measure some voltages on the zsus. I measured the socket on the zsus in pairs, and I noticed...

Just got one of these for £10 for a project I am doing. I am new to TVs in general apart from looking like a genius for replacing obvious bad caps.

Tries to turn on, front LED goes from red to green, then relay sound and kicks off.

On the control board there is an LED that lights green, and another one that starts flashing and then, when relay kicks, it goes off.

Power Board.
Tested voltages of power board, all seems fine. Caps look good, but looks are not everything. Waiting for a cheap ESR meter to arrive before further investigation. Did...

Re: New Members - please post your introductions here

Hi all, I am a uk radio amateur. Nothing is broken, it is all just in various states of repair.