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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Tue Dec 09, 2008 6:06 am Post subject: The good and the bad! (another 1209s problem) |
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Well the good news is after receiving another smps (first one damaged in shipping,curt was generous enough to send
another  )wacked it in,pj fires up with crackling of the tubes,all seems good.
The bad,I'm not getting any pic at all,not even internal test pattern.I've reset all boards and also checked the led on eht,no red led,I've tried feeding a source with no luck,what can I check?
Dave
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Tue Dec 09, 2008 7:33 am Post subject: |
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What are you using for an input ? Are you only using the IR remote or have you also tried the internal wired remote ?
Are you using input three or five ?
Nothing happens when you push the ADJ button on the internal or external remote ?
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Tue Dec 09, 2008 8:51 am Post subject: |
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Hi Tom,yep tried all buttons and my wired remote has never worked so I dont bother with that,even with no input I should still see the Barco start up menu,but am getting nothing,it's like the pic is muted.
I'm using port 5 btw.
Dave
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Tue Dec 09, 2008 10:04 am Post subject: |
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Update
I've just read through curt's troubleshooting,there is no red led lit on the EHT,so I assume the smps IS sending power to it and I've checked the fuse on the EHT,it's fine.
Red "scan fail" led on the g2 board is not on so that's eliminated.
The one thing I did notice is that the "pulse" on the horizontal shift board is not there so according to curt's troubleshooting the H shift board is bad 
Does this sound right?
Dave
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Gary M.
Guest
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| Posted: Tue Dec 09, 2008 10:25 am Post subject: |
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sorry to hear of more Runco/1209s trouble Dave
-Gary
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Tue Dec 09, 2008 1:48 pm Post subject: |
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CHeck the 17 .5 volt test point on the SMPS. I set it here, so it should be OK, but if that's out far enough, that can cause the pix to black out.
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Z-Photo
Joined: 07 Mar 2006
Posts: 2749
Location: Huntsville - Alabama
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| Posted: Tue Dec 09, 2008 3:57 pm Post subject: |
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did you check the picture mute?
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Wed Dec 10, 2008 7:42 am Post subject: |
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| Curt Palme wrote: | | CHeck the 17 .5 volt test point on the SMPS. I set it here, so it should be OK, but if that's out far enough, that can cause the pix to black out. |
Curt
Just checked it and it's reading 17.71 volts,seems pretty close so what's left to check?Oh and pic mute is the first thing I checked.
Dave
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Wed Dec 10, 2008 8:22 am Post subject: |
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Maybe Hwidth from smps (P2) is set too high for your projector.
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Wed Dec 10, 2008 9:46 am Post subject: |
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| Ile wrote: | | Maybe Hwidth from smps (P2) is set too high for your projector. |
Well I've measured voltage at base of transistor(middle pin on Q3,according to service manual, page 302) while pj on and have 35 volts,should it be adjusted to 48 volts at p2 on smps?or is number within tollerance?
Just so I know I'm measuring correctly,I'm using the chassis as earth.
Dave
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benny
Joined: 10 Mar 2006
Posts: 29
Location: Inner Melbourne, Aust
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| Posted: Wed Dec 10, 2008 2:20 pm Post subject: |
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Dave actually meant the Collector leg rather than the base. It WAS the middle leg of the tranny he was measuring.
I was on the other end of the phone guiding him thru it while he fumbled with his probes.
Cheers,
Russ
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Dec 10, 2008 2:37 pm Post subject: |
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| benny wrote: | It WAS the middle leg of the tranny he was measuring.
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You would NEVER catch me doing that... 
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Wed Dec 10, 2008 4:08 pm Post subject: |
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| huggy wrote: | | Ile wrote: | | Maybe Hwidth from smps (P2) is set too high for your projector. |
Well I've measured voltage at base of transistor(middle pin on Q3,according to service manual, page 302) while pj on and have 35 volts,should it be adjusted to 48 volts at p2 on smps?or is number within tollerance?
Just so I know I'm measuring correctly,I'm using the chassis as earth.
Dave |
Is there red scan fail led on? Too high horizontal amplitude should make scan fail.
If yes, you can turn pot little to ccw to see if you get picture.
Then adjust it correctly with picture and standard def (15.2kHz). Voltage depend about freq, so your low readings can be caused by wrong resolution during measurement.
If there is no scan fail leds on it could be bad switcher board or something else.
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Wed Dec 10, 2008 6:54 pm Post subject: |
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No scan fail led's on,that's one the first things I've checked.
Dave
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Wed Dec 10, 2008 7:06 pm Post subject: |
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One thing I did notice was the blue tube raster is very slightly lit,does this mean anything?
I'm running out of things to check here.
Dave
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Wed Dec 10, 2008 7:59 pm Post subject: |
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Could be the horizontal board. Had the same problem with my BG 808. All LED's green but no picture. I think that's a rare problem though. Had to ship all my boards to Curt to narrow it down...
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Person99
Joined: 09 Mar 2006
Posts: 4899
Location: Flower Mound, TX
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| Posted: Wed Dec 10, 2008 8:28 pm Post subject: |
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Trying running the contrast up and see what happens.
Also, depending on the model and config, you don't always get a start up screen. Get a source hooked up and working with a CRT computer monitor. Then put that source into port 5. Turn on the PJ by pushing "5".
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Dave
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Wed Dec 10, 2008 10:25 pm Post subject: |
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| Tom.W wrote: | | Could be the horizontal board. Had the same problem with my BG 808. All LED's green but no picture. I think that's a rare problem though. Had to ship all my boards to Curt to narrow it down... |
Tom
As stated in my previous post,according to curt's troubleshooting I should be getting pulsing on the led on the horizontal board,but there is nothing lit up on that board.
Dave
I've tried putting the contrast and brightness up and down before to no avail,the 1101 has always shown the start up menu without any input and I dont have a crt monitor to try what you are suggesting.
I do have port 3 connector which came with the fury,I might try that and hit 3 on the remote and see what happens.
Dave
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benny
Joined: 10 Mar 2006
Posts: 29
Location: Inner Melbourne, Aust
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| Posted: Wed Dec 10, 2008 10:46 pm Post subject: |
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| Curt Palme wrote: | | benny wrote: | It WAS the middle leg of the tranny he was measuring.
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You would NEVER catch me doing that... |
HAHA ... be sure to put that on your 'bucket' list then Curt. It could lead to all sorts of possibilities 
Cheers,
Russ
_________________
It's converged! Now if only I could remember what I did ......
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Thu Dec 11, 2008 3:08 am Post subject: |
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OK, catching up on posts...
Try feeding it a straight video signal on input 1, see if that works. Sometimes these sets blank out completely when there's no input detected.
At turnon, look into the tubes, and see if you can see ANY light coming out of the tubes at all. You should see either a dotted line, or some flicker of each tube color at the extreme bottom or top of the tubes (slightly off the phosphor usually), on the bottom of the tube if the set is set for floor mount. That's the AKB line (I think), and will at least indicate that you have H and V deflection and HV.
If the scan fail isn't on, and all green LEDs are on, then your new SMPS should be fine. I did test it in the chassis here before sending it, so it should be OK.
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