Re: Z50PJ240 Powers on then back off clicks but no picture
What should that diode read?
What should that diode read?
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Re: Z50PJ240 Powers on then back off clicks but no picture
Checked the diode in diode mode and the resistor in ohmsLast edited by soog35; 10-31-2013, 02:45 AM.Comment
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Re: Z50PJ240 Powers on then back off clicks but no picture
testing the YSUS
grd to VS is 3.37
grd to VA and grd to 5v starts out about that but starts dropping
don't see 15 v
What is yours?Comment
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Re: Z50PJ240 Powers on then back off clicks but no picture
Help me here, put some units in like ohms or kohms (K) or Mohms(meg) or is it in diode mode?
If Vsus to gnd is 3.37 ohms on the ysus connector, it's stuffed or shorted?Comment
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Re: Z50PJ240 Powers on then back off clicks but no picture
MohmsComment
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Re: Z50PJ240 Powers on then back off clicks but no picture
What should it be?Comment
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Re: Z50PJ240 Powers on then back off clicks but no picture
If Mohms then that's what i expect, Mine's about 3 meg vsus, 4meg Va and 5v is not steady but 1.5meg or so. They're not short, that's all I was concerned about.
So buffers not shorted, ysus power in not shorted, probably all you can establish apart from the zsus power in from the ysus.
All going well the PSU sorts it out, at least it won't be presented with a short cct when it comes on.Comment
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Re: Z50PJ240 Powers on then back off clicks but no picture
OK Thanks. Hope the PSU will fix it.Comment
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Re: Z50PJ240 Powers on then back off clicks but no picture
On my ZSUS P1 - gnd
1,2. 15v - gnd 2.7meg
3,4 5v -gnd . 3.4meg
5. gnd
6. OE - gnd 2.8meg
7. Z-bias 4.7k
8. SLOP-CTRL 4.7k
9. Z.ER 4.7k
10. SUS_DN 4.7k
11. SUS_UP 4.7k
12. GND
connector P2
1,2 gnd
3 n/c
4,5 Vsus 13.5 meg - gnd
6 n/c
7,12 ER 5.8-6meg - gndLast edited by tw2005; 10-31-2013, 04:00 AM.Comment
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Re: Z50PJ240 Powers on then back off clicks but no picture
Can't figure out how to check that correctly. On P1 do put 1 lead on pin 5 and check all the other pins?Comment
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Re: Z50PJ240 Powers on then back off clicks but no picture
yep, blk on gnd or an earthing lug nearby I used. Checked gnd to lug 0 ohmsComment
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Re: Z50PJ240 Powers on then back off clicks but no picture
I'll try again, seemed way off compared to yours.Comment
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Re: Z50PJ240 Powers on then back off clicks but no picture
If the board is out flip it over the pin labels are underneath too. the legend on top for one of those is covered with a big blob of silicone so I could not read the pins that way.Comment
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Re: Z50PJ240 Powers on then back off clicks but no picture
On P1
1. 1.9meg
2. 1.06meg
3. nothing
4. nothing
7 through 11 1.22meg
On P2
on 4 and 5 2.5meg
on 7and 12 2.1megComment
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Re: Z50PJ240 Powers on then back off clicks but no picture
I may take the board off and check it again tonight, going on 7am here have to be at work at 8 so I don't have time right now. Been up all night checking this thing...lolComment
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Re: Z50PJ240 Powers on then back off clicks but no picture
TW and TOM
I got the new PSU but haven't installed yet. The D304 diode seems to be open, so this could be defective. I have a pic of the diode and a video link of me testing it. Do you guys think this would give me trouble if I install this as is. I don't want to mess up anything else. I still have a good diode I could replace it, or maybe I need to send it back. Does it look bad to you guys?
http://www.youtube.com/watch?v=q-U5mcdy2kAAttached FilesComment
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Hi Guys,
This forum has been in great help to me, but I stumbled upon a strange problem with a salvaged Samsung TV that I am banging my head to troubleshoot.
PSU: L48S6 FHS BN44-00807D
T-Con: BN95-01937A
Panel: CY-GJ048HGLVLH
MB: NA (Currently as the TV is assembled and forgot to take picture)
As I said earlier I have some issues with the TV I got from a friend of mine. The TV had no picture, but sound, back light and everything else was working fine.
It was sent to an authorized service for repairs and returned with the... -
hello, I have a Vizio E371VL - the orange Vizio logo lights up while not powered on, changes to bright white when power button pressed but there is no picture.
There is no backlight, and I've done the flashlight test and cannot see any picture. The TV also will not power off using the button or the remote - I have to unplug the power cable to shut it down. The white light never fades out until unplugged. Its almost like its stuck in the powering up phase or something.
I bought a replacement mainboard and replacement power board. Neither have fixed the issue. It still... -
LG 47LB6500.ATR - No Picture/No Back light but has standby voltage
My living room TV kaput after lighting storm along with Cable Set-top Box connected via HDMI-3.
So, with my little knowledge of electronics I thought of fix it by myself.
First, I searched forum for any case registered existing if anyone have same issue/symptom.
Found some few case near matching But not really the same !!!
Now decided to open a new thread.
Brand: LG
Model: 47LB6500.ATR
Panel: LC470DUH (FG)(P2)
Main Board: EAX65363904
... -
I have a Dick Smith 37" LCD TV, Model GE6804. I am using it as PC extended monitor only.
Problem is while watching tv, I hear a semi loud click(like a electrical breaker tripping due to overload, just sound like it but no actual electrical overload), then screen is covered with green or pink. I can still see the original picture image but overlayed by green or pink. See attached images. Pink.jpg is what I see, and Normal.jpg is before green or pink screen, What I captured was pink screen, but about 80% of time it's green and 20% of time it's pink.
Then each time... -
I changed few leds on led background and tv works for about one year.
It is not much in use.Then stops working again, I checked leds on background, all are ok.
When I light up the screen with lamp there is a picture but background is not working and you can`t se the picture on the screen.
When I touch connector for led background with probes of backlight tester they light up and tester shows 108V. After that TV turn on normaly and picture is ok, backlight is working. After TV is turn of again backligt is not working, just on first turning on GRUNGDIG picture on boot is shown...
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