Re: Z50PJ240 Powers on then back off clicks but no picture
What should that diode read?
What should that diode read?
-
-
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
-
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
-
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
-
Re: Z50PJ240 Powers on then back off clicks but no picture
MohmsComment
-
Re: Z50PJ240 Powers on then back off clicks but no picture
What should it be?Comment
-
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
-
Re: Z50PJ240 Powers on then back off clicks but no picture
OK Thanks. Hope the PSU will fix it.Comment
-
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
-
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
-
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
-
Re: Z50PJ240 Powers on then back off clicks but no picture
I'll try again, seemed way off compared to yours.Comment
-
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
-
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
-
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
-
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
-
-
hi guys, i need your help again...i have tcl u65x9006. while i was watching it become darker like when a movie ends, little by little the image disappear. now if i turn on i have back light on, after like 1 min i have also sound but no picuture. the back light is on i take off one at time the ldvs but nothing change always no picture. i tried to cover with a piece of paper the pin of ldvs i cover like 7 8 pins but nothing worked. the tv stay with no picture. there is a tcon board.i checked the voltage there on the fuse i have 11,8 volts. there is caps in shorts on the exit of the tcon i have... -
Hi people!!
The owner said it showed bad picture once in a while (attached)
I see that there is back light but no picture.
I want to ask if it is possible to disable the NVIDIA GPU and use the intel one?
Also attached schematic and BDV
LINK to schematic & boardview - https://www.badcaps.net/forum/troubl...ll-vostro-5590... -
I replaced the backlights all good. Two months later set was dead, had a shorted D9100, replaced all good again.
Now months later set powers up,backlights light ok,no picture. 12volts missing from fuse on tcon. 12VA on power
supply is 19 volts. Changed D9100 again, same, 12 volts measures 19. Am I looking at a power supply or mainboard
issue. Set will power up with remote but not power off.... -
Hi, I'm unexperienced with troubleshooting and I'm not sure how to proceed with this laptop.
Motherboard is A5WAH LA-B991P I think, i5-5200U and nvidia 820m.
When I received the laptop, CMOS battery had 0V. I took it out and all the testing has been done without a CMOS battery and without the main battery plugged in, I haven't been able to see physical damage, burnt or missing components with a quick visual inspection, and no shorts were found.
Laptop charges the battery, powers on when ON button is pressed when powered from charger and when powered from the battery, but... -
Saved this beast from the landfill this weekend.
Manfactured July 2013 in Mexico.
I love working on plasma TVs.
Its been a while but I was lucky enough to find 2 this week.
The TV powers on and stays on but no picture. Havent checked for sound yet.
No bulging caps although the insides are pretty dusty and the boards are discolored from many years of high heat.
Will start troubleshooting tonight.
...
Comment