Author Topic: Toshiba 42rv530u, fuse resistor keeps blowing (Read 5376 times)

kodie · « **on:** March 19, 2015,13:52:26 »

My tv has a problem with resistor 1.8 ohm in psu keeps blowing

Mulja tv repair portal · « **on:** March 19, 2015,13:52:26 »

Turnip · « **Reply #1 on:** March 20, 2015,12:40:22 »

Hi Kodie,

Suspect the input PFC FET is S/C and drive chip probably duff (without any more info) Had it been the bridge rectifier the mains fuse would have blown.

kodie · « **Reply #2 on:** March 20, 2015,19:50:06 »

Quote from: Turnip on March 20, 2015,12:40:22

Hi Kodie,

Suspect the input PFC FET is S/C and drive chip probably duff (without any more info) Had it been the bridge rectifier the mains fuse would have blown.

Thanks turnip, I will try, yes if the main fuse is blown I suspect the bridge rectifier, but this is the resistor, maybe a diode or transistor that drive the relay.

Mulja tv repair portal · « **Reply #2 on:** March 20, 2015,19:50:06 »

Turnip · « **Reply #3 on:** March 21, 2015,13:11:11 »

Hi Kodie,

Need more information to have any sensible idea - panels maybe, genuine Toshiba or Vestel ? - Chris

jordan · « **Reply #4 on:** March 22, 2015,04:45:29 »

42rv530u

kodie · « **Reply #5 on:** March 22, 2015,10:03:24 »

Quote from: jordan on March 22, 2015,04:45:29

42rv530u

I was reading the pdf, but no schematic diagram. Thanks Jordan. I bought the same pdf, bought lcd/led repair tips on eBay. No idea about this 1.8 ohm resistor

Mulja tv repair portal · « **Reply #5 on:** March 22, 2015,10:03:24 »

Turnip · « **Reply #6 on:** March 22, 2015,12:40:33 »

Hi Kodie,

Cheap Toshiba mostly Vestel. Might be useful if you give panel details, as Toshiba doesn't seem to in the download for some reason - Chris.

watteau · « **Reply #7 on:** March 24, 2015,10:29:57 »

Hi,
Check these power-supply circuits:

Mulja tv repair portal · « **Reply #7 on:** March 24, 2015,10:29:57 »

Mulja tv repair portal

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