CurtPalme.com Home Theater Forum

stefuel · Posted: Tue Dec 15, 2009 12:56 am Post subject:

dturco · Posted: Tue Dec 15, 2009 3:24 am Post subject:

Wow, so if it is a yoke I should buy Marquee yoke just to throw away? In other words why not find the problem with whatever yoke it is {if it is a yoke} and use the Sony's as the replacement instead of swapping in a marquee yoke and then swap that out for the Sony's later?

I mean if the yoke is bad why not just replace it once with what is the better [Sony] yoke anyway?

I'm not going to do the Frankenyokes if the yokes aren't the problem, but if they are, why do it twice? Why not do it while it's apart?

I realize that all of the yokes wouldn't need to be done if only one is bad, but why not do them all while your working on it?

Try this scenario, you pull the transmission from your car to fix the valve body or something like that. The parts to fix that are $125, or a complete rebuild kit including that valve body part is only $175. Do you just do the $125 fix or do you rebuild the WHOLE thing while it's apart?

Me I'll do the whole thing because it's already out of the car and the price difference is small. But opinions vary so...

Did I miss something here?

Also I'm swapping in a new power supply on Thursday to verify it's not that.

**Curt Palme** · Posted: Tue Dec 15, 2009 3:28 am Post subject:

The Frankenyokes are the focus coils, not the main yokes. You can have a main yoke for the price of shipping, I have piles here...

dturco · Posted: Tue Dec 15, 2009 3:31 am Post subject:

**Curt Palme** · Posted: Tue Dec 15, 2009 3:38 am Post subject:

BTW, let me also point out that I think we're on the wrong path here with the AC power grounding thing.

With every strange problem I've ever had in electronics, and I am stumped, I end up going down some strange path of AC power, some tiny rare flaky component, or the fact that I didn't install directional cables ( Wink

). In EVERY case it turns out to be something completely logical, which ends up putting my faith back into electronics, the fact it's so logical.

Here's my take on the grounding thing:

Even if the AC ground was flaky, the chassis itself is ground to the components inside the set, so even if there was no AC ground to the projector itself, the entire chassis itself is a ground reference to everything that the power supply feeds.

Trust me, this is bugging the crap out of me. All I can think is that something is giving out massive harmonics, I'm guessing the yokes, that are affecting the cell phone. I don't think this is AC power related at all.

Hey, try this:

Unplug one of the H deflection coils with the set off, and power up. That will kill the HV and H deflection. I'll bet the cellphone works.

Also, try leaving the H deflection coils plugged in, and yank out the HVPS and power up. I'll bet the cell cuts out.

I'll bet you guys a donut!

Smile

dturco · Posted: Tue Dec 15, 2009 3:45 am Post subject:

Sounds good Curt, I'll try tomorrow, I'm a bit burnt out from my trip to Philly. And thanks for the yoke offer too.

**AnalogRocks** · Posted: Tue Dec 15, 2009 4:52 am Post subject:

**Curt Palme** · Posted: Tue Dec 15, 2009 4:55 am Post subject:

No silly, I become a glazed donut!

mp20748 · Posted: Tue Dec 15, 2009 1:10 pm Post subject:

dturco · Posted: Tue Dec 15, 2009 5:51 pm Post subject:

1031 · Joined: 22 Mar 2006 Posts: 657 Location: Finland

One thing came on my mind, Athan has that oscillating stig amp, could this be same issue? least worth of test that also. One another thing, you said that you get sparks/snaps sometimes, so open all tubecovers and see if there is blue glow inside tube. I had that once (whit oscillating neckboard) and that issue messed colorbalance and did loud snap time to time.

dturco · Posted: Tue Dec 15, 2009 6:45 pm Post subject:

dturco · Posted: Tue Dec 15, 2009 7:55 pm Post subject:

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

dturco · Posted: Tue Dec 15, 2009 8:33 pm Post subject:

The Yokes were connected when the H/V power was pulled, and powercord was unplugged during H/V removal and then plugged back in, then turned on.

The H yokes done were the blue first, turned on P/J phone worked. Plugged blue back in phone didn't work. Unplugged green, phone worked, plugged green back in, no phone. Left all three H wires attached, pulled H/V power supply phone worked. Put H/V power supply back in no phone.

Unplugged all three H/V anode leads, left H/V lead from H/V supply in splitter and left all h/V wires connected. H/V power supply out P/J powered on, phone worked, H/V in and powered on, no phone.

Edit: GOZER was powered off each time between wire pulling and lead pulling, just in case anyone was wondering.

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

ok sounds like the HVPS main lead might be it or the HVPS itslef, just to make sure, when all HV lead were not connected you had the H yokes all connected. right?

Athanasios

dturco · Posted: Tue Dec 15, 2009 9:50 pm Post subject:

dturco · Posted: Wed Dec 16, 2009 12:44 am Post subject:

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Well looks like you need to swap in someone else's HVPS. If the same problems still happen it could be the yokes or worse, possibly the HVPS connector on the backplane. Maybe you can look at it from the front with the HVPS pulled. You might not be able to see it well from that distance. No HV goes through it but the G2's and the power from the LVPS 390VDC does. Th G2's can get higher than 600VDC , i am not sure if that would cause any interference for the cell, but it would do things to the video. However I never heard of the connector the HVPS get messed up unless the HVPS didn't fir and someone forced it hard. I while back someone with a LVPS connecter that snapped had start up problems.

So try another Supply and then go from there.

Nashou

Athanasios

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado