Matsui LM20N2 inverter problem

[tom66]

Re: Matsui LM20N2 inverter problem

There is only two of these caps on the board.

Give it a shot then with 270nF. I would like to be more help but I don't have a clue...!

[bbjunkie]

Re: Matsui LM20N2 inverter problem

Found some brown caps in my junk box similar to the blue ones, but much smaller for similar rating, I guess they must be a lower voltage rating.

Havent got any 270nf but have a 340 and 220 as they are going in parallel I guess the values wouldn't matter that much.

Is it worth trying them?

[tom66]

Re: Matsui LM20N2 inverter problem

Found some brown caps in my junk box similar to the blue ones, but much smaller for similar rating, I guess they must be a lower voltage rating.

Havent got any 270nf but have a 340 and 220 as they are going in parallel I guess the values wouldn't matter that much.

Is it worth trying them?

Assuming you mean 330nF, in parallel with 220nF that makes 550nF, compared to 540nF. Close enough; these types of capacitors have a 5% or 10% tolerance and both are within that range. Are they definitely in parallel? A single 560nF may be okay.

[bbjunkie]

Re: Matsui LM20N2 inverter problem

I had thought about a single cap of 540nf but wondered if they were in parallel to avoid a catastrophic failure if it died.

Will try the 340nf and 220nf

[bbjunkie]

Re: Matsui LM20N2 inverter problem

Perfect! got a nice picture on the set now. Started up no problem with the caps and I managed to salvage just enough good 2SD965's from the first time I replaced them all.

All I need to do on this one now is repair the plastic tab that operates the standby switch.

Thanks guys for all the help, as usual.. this forum is awesome!

Jim

[tom66]

Re: Matsui LM20N2 inverter problem

Perfect! got a nice picture on the set now. Started up no problem with the caps and I managed to salvage just enough good 2SD965's from the first time I replaced them all.

All I need to do on this one now is repair the plastic tab that operates the standby switch.

Thanks guys for all the help, as usual.. this forum is awesome!

Jim

Great, another mystery solved, another TV fixed !