Toshiba 42rv530u wont power on

[Heavyarms92]

Re: Toshiba 42rv530u wont power on

Looks like your tv was made in 2008, you very well may need some new caps.

Yes, that's very likely I'm just not sure how to take the 450 uf out with the extra petals in place.

[R_J]

Re: Toshiba 42rv530u wont power on

I see from sj pictures the cap does not use a plastic cap so if it's bulged it needs replacing
This digikey link should get you close, then measure it and the lead spacing
https://www.digikey.com/products/en/...=1&pageSize=25

[nomoresonys]

Re: Toshiba 42rv530u wont power on

If you go to harbor freight, it's the cen-tech 11 function $21.99, usually some coupons at their site and in mailers they send out.

[budm]

Re: Toshiba 42rv530u wont power on

Taking that 450VDC cap is the LAST thing you will want to do.
1) We have not seen the pictures of YOUR board yet. Your Power supply board P/N????
2) What Voltages do you have on the connectors on the cold side of the power supply.
3) Is the TV plugged into the GFCI out let at this point?
4) Which meter are you using right now? Did you figure out yet how to set the meter properly to read Ohm, DC Voltage, AC Voltage?
5) I am really CONCERNED about you getting electrocuted!

[nomoresonys]

Re: Toshiba 42rv530u wont power on

Just be careful to only touch the legs with the meter leads, keep your hands away.

[nomoresonys]

Re: Toshiba 42rv530u wont power on

Wouldn't be my first suggestion either, he thought it was bulging, so what do you do with a bulging cap, you replace it VERY CAREFULLY.

[nomoresonys]

Re: Toshiba 42rv530u wont power on

Is this your board? if so it's going to be a little harder checking voltage on the big cap, because the cap is upright and not lying on it's side.
http://www.shopjimmy.com/toshiba-750...upply-unit.htm

[nomoresonys]

Re: Toshiba 42rv530u wont power on

Might be faster and easier to just buy that board.

[R_J]

Re: Toshiba 42rv530u wont power on

If this is the board it is very easy to measure the voltage on that cap. See location C821....
Regarding C820, The cap on this board does not have the plastic cap, so if it IS bulged then it should be replaced.

This what I was referring to regarding the bulged plastic top: http://audiokarma.org/forums/index.p...citors.421456/
This happens a lot, and the cap. is fine

[Heavyarms92]

Re: Toshiba 42rv530u wont power on

Taking that 450VDC cap is the LAST thing you will want to do.
1) We have not seen the pictures of YOUR board yet. Your Power supply board P/N????
2) What Voltages do you have on the connectors on the cold side of the power supply.
3) Is the TV plugged into the GFCI out let at this point?
4) Which meter are you using right now? Did you figure out yet how to set the meter properly to read Ohm, DC Voltage, AC Voltage?
5) I am really CONCERNED about you getting electrocuted!

Whoa, I didn't plug anything in, no one told me to. Sorry for making you worry not my intention. I've been reading and double checking that manual and feeling like an idiot. I'm going to hang it up for now though, it's gonna be a long week at work.

I was actually reading the meter right, I incorrectly assumed that the reading would be close to the uf on the capacitor. I guess I misunderstood. It actually just kept going up infinitly like a good capacitor should.

Currently trying to upload pictures. My board is the PE0546A version.


I feel bad about worrying you never my intention, I am so grateful for everyone too. I will try to get back to this board later in the week. I bet it's that switch. NEVER plugging anything in while I have the top off unless I know I'm safe.

[Heavyarms92]

Re: Toshiba 42rv530u wont power on

Might be faster and easier to just buy that board.

Yes... I want to learn, but not waste people's time. I am not very good at board troubleshooting. My Grandma was, she used to work on stuff like this back in the day. Old IBM stuff that was real big. I just want to try and find a board that is compatible and won't go haywire on me too.

[Heavyarms92]

Re: Toshiba 42rv530u wont power on

Is this your board? if so it's going to be a little harder checking voltage on the big cap, because the cap is upright and not lying on it's side.
http://www.shopjimmy.com/toshiba-750...upply-unit.htm

That's the one, I just uploaded pictures. See post 90 plz.

[Heavyarms92]

Re: Toshiba 42rv530u wont power on

If this is the board it is very easy to measure the voltage on that cap. See location C821....
Regarding C820, The cap on this board does not have the plastic cap, so if it IS bulged then it should be replaced.

This what I was referring to regarding the bulged plastic top: http://audiokarma.org/forums/index.p...citors.421456/
This happens a lot, and the cap. is fine

Dang those are popped! Mine does not look like that.

[R_J]

Re: Toshiba 42rv530u wont power on

The only thing poped on those in the link is the plastic, the caps are fine. But some caps don't use that plastic, Then if you see the bare aluminum bulged they are bad
Now post pictures of your board so we can HELP YOU

[Heavyarms92]

Re: Toshiba 42rv530u wont power on

The only thing poped on those in the link is the plastic, the caps are fine. But some caps don't use that plastic, Then if you see the bare aluminum bulged they are bad
Now post pictures of your board so we can HELP YOU

I done did, they are on 90. It won't let me upload from my gallery , and I already buttoned her up for the night sorry.

Maybe I should have started out with pictures. I gurssI have been assuming too much lately. This TV used about 3-4 boards in its lifetime. I'm not gonna lie I am seriously thinking about replacing mine but I wanna try a and figure that relay out SR81 I believe. I feel like I've caused a few headaches believe me that was not what I set out to do here. I blame Tampatec he makes it look too easy.

[nomoresonys]

Re: Toshiba 42rv530u wont power on

If this is the board it is very easy to measure the voltage on that cap. See location C821....
Regarding C820, The cap on this board does not have the plastic cap, so if it IS bulged then it should be replaced.

This what I was referring to regarding the bulged plastic top: http://audiokarma.org/forums/index.p...citors.421456/
This happens a lot, and the cap. is fine

Was referring to C820 NOT 821.

[nomoresonys]

Re: Toshiba 42rv530u wont power on

I done did, they are on 90. It won't let me upload from my gallery , and I already buttoned her up for the night sorry.

Maybe I should have started out with pictures. I gurssI have been assuming too much lately. This TV used about 3-4 boards in its lifetime. I'm not gonna lie I am seriously thinking about replacing mine but I wanna try a and figure that relay out SR81 I believe. I feel like I've caused a few headaches believe me that was not what I set out to do here. I blame Tampatec he makes it look too easy.

Not a problem, a lot of us are here to help if we can and learn.

[nomoresonys]

Re: Toshiba 42rv530u wont power on

We should have started with the basics, that's checking voltages at the powersupply connector/s, p860, p810A and P811A, check the second video below, has a demo.

[nomoresonys]

Re: Toshiba 42rv530u wont power on

When you're comfortable with your meter, measure the voltages on those connectors, will be with meter set to 20 vdc, in this case negative lead is to groung/tv chassis is ok and red lead to pin, will test with tv plugged in, will take reading with tv in standby which is just plugged in, then hit power on and see if anything changes on the meter and report both conditions, need description of pin and expected voltage, here's an example of how to report it:
CNxxxx
1/2 - UD: 14V=14v standby, 14v tv on
3/4 - PWM_BLU: 14V=14v stby, 14v tv on
5/6 - PS_ON: 14V=0v stby, 14v tv on.
7/8 - GND: 15V
9/10 - GND: 0V something to that effect.

[R_J]

Re: Toshiba 42rv530u wont power on

Was referring to C820 NOT 821.

NO, I ment C821 The board location is not populated but the rivits and contact to the trace is there, and that cap is in parrallel to C820, So the voltage can be tested from above.