Spectre E325BV no power.

[Malachi]

Re: Spectre E325BV no power.

Just tried it. Put the psu back on, put black lead on grd of chassis, red on any of the pins CN5 labeled with voltage and plugged in an unplugged the power each pin.
0 volts on all of them.

Also tried by leaving the TV plugged in and using the power button on the side. Nothing.

[dick_barton]

Re: Spectre E325BV no power.

I'm trying to find out whether or not the 5V is jumping up and then back to 0V as you switch on. Basically I'm asking if you see a pulse.

[dick_barton]

Re: Spectre E325BV no power.

My fault. I shouldn't have said chassis for the negative lead but place it on one of the pins marked GND.

[Malachi]

Re: Spectre E325BV no power.

My fault. I shouldn't have said chassis for the negative lead but place it on one of the pins marked GND.

No change. No pulse, ever.

No change when heating up EC1 either.

[dick_barton]

Re: Spectre E325BV no power.

Can you try this once more in exactly the same way but this time measure the DC at Pin6 of IC1 which earlier you said was 2.7V and see if this peaks at switch on before dropping.

[Malachi]

Re: Spectre E325BV no power.

I'm not sure how to do that. The pins on IC1 are on the underside of the board. If I take the board out of the TV, it won't be grounded to the chassis anymore.

[Malachi]

Re: Spectre E325BV no power.

It spiked up to 2.8v

[dick_barton]

Re: Spectre E325BV no power.

Hello malachi,
At this point I must say I'm at a complete loss. Hopefully someone else can offer you some assistance.

[Malachi]

Re: Spectre E325BV no power.

Thanks for all the help dick. I've already ordered a confirmed working psu.

[dick_barton]

Re: Spectre E325BV no power.

It will be interesting to see if you can find the fault on comparison.

[Malachi]

Re: Spectre E325BV no power.

I'll try.

[budm]

Re: Spectre E325BV no power.

I would change the cap EC1, if it is too far gone then the heat will not have affect on it.

[Malachi]

Re: Spectre E325BV no power.

I'll try that.

[Malachi]

Re: Spectre E325BV no power.

I replaced EC1, no change. The "working" psu arrives Friday. So we will see.

[Malachi]

Re: Spectre E325BV no power.

New power supply came and the TV works.
What should I compare between the two?
Is it worth bothering to?