Pioneer Elit 1120HD Power Supply issue?

[Boyd1966]

Hi All,

I am back. I had success with the help of HeavyMachines and freakaftr8 with replacing a couple capacitors and need their help again. The TV worked great until now it won't stay on.

ISSUE: When turning the TV on, the screen flashes on then hear a click and the TV turns off with the red light blinking. attached is a pic of the screen right before it shuts off.

I am guessing it is the power supply but would like your review and help to diagnose and fix.

Thanks in advance!
Boyd

[freakaftr8]

Re: Pioneer Elit 1120HD Power Supply issue?

Hey it's been a while! Looks like sustain board issues. Can you snap clear photos of the power supply, Y and Z boards?

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

Yeah it has been awhile but I was hoping not to be back so soon!! Here are the pictures you requested. Let me know if you need close ups but hopefully you can enlarge them if need be.

Boyd

[freakaftr8]

Re: Pioneer Elit 1120HD Power Supply issue?

On the Z board, unplug the connector that feeds VSUS. Power on and see if it stays on.

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

U forget I don't know what I am doing. ..which is the Z board? And where is rhe VSUS?

[freakaftr8]

Re: Pioneer Elit 1120HD Power Supply issue?

The board in your 2nd picture

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

No it won't stay on...stays on green light for 3 or 4 sec and then shuts off with red blinking light.

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

No it won't stay on...stays on green light for 3 or 4 sec and then shuts off with red blinking light.

[freakaftr8]

Re: Pioneer Elit 1120HD Power Supply issue?

OK you can try plugging That side back in and unplugging the connector off the opposite board

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

I'll have to check it in the morning. I'm eastern USA time zone

[freakaftr8]

Re: Pioneer Elit 1120HD Power Supply issue?

I just reviewed our other post that we had with your past repairs. On the Y board double check all your connections were you soldered the capacitors and make sure that they're making a good connection.

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

I unplugged the Y board. Still won't stay on. Checked my solder connections and they look good.

[freakaftr8]

Re: Pioneer Elit 1120HD Power Supply issue?

Ok. Your obviously generating some kind of VSUS voltage. You wouldn't see anything if you were not.

I'm wondering what VSUS may be doing in the few seconds it stays on. Do you have a volt meter?

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

The picture I posted originally is what happens during the few seconds before it shuts off. For example, I turn on the tv and the image of the picture I posted shows up for a split second and then shuts off.

I don't have a voltmeter but I can go buy one.

[freakaftr8]

Re: Pioneer Elit 1120HD Power Supply issue?

Ok well let's try this on the Y board that you repaired before . Get a hair dryer and heat up the capacitors that you previously replaced especially C2302.

Try powering it on and see if it does the same thing if it does repeat the same procedure with the Z board.

This is a shutdown because one or more of voltages are out of spec in judging by the picture I'm seeing it looks like VSUS is low

Now this could be caused by a sustain board problem or a power supply problem as we need to figure out.

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

Ok. I will do that in about an hour or two. Unfortunately, work is calling.

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

You mean C2304 don't you?

[tom66]

Re: Pioneer Elit 1120HD Power Supply issue?

Can you note how many times the red light blinks when the set shuts down? It might tell us a more specific fault code.

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

In 3's. i.e. blinks 3 times, blank, blinks 3 times....

To clarify. Once I push the ON button, light goes green, then maybe 2 seconds, the tv clicks and then the red light blinks in sequences of 3.

[Boyd1966]

Re: Pioneer Elit 1120HD Power Supply issue?

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