Hi guys I was replacing the start up caps on this board and I pulled the copper trace on the 1uf @50 volts. The other two 22uf @50 volts were ok I know some of you have repaired broken traces but this is so small I can't see where the circuit leads. My question is how are these three caps connected in the circuit? Can I use a jumper to the leg with the broken trace?
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
Announcement
Collapse
No announcement yet.
Broken Trace
Collapse
X
-
Re: Broken Trace
Originally posted by davg View PostHi guys I was replacing the start up caps on this board and I pulled the copper trace on the 1uf @50 volts. The other two 22uf @50 volts were ok I know some of you have repaired broken traces but this is so small I can't see where the circuit leads. My question is how are these three caps connected in the circuit? Can I use a jumper to the leg with the broken trace?
-BenMuh-soggy-knee
-
Re: Broken Trace
Thanks guys I did as ben7 suggested as shown in the photo. This board was not powering up no led but I did have 5volt and 12 volt to the logic connector and 169 volts on the large cap.I replaced these three caps because they were the only ones that were not replaced and now I don't have any voltage to the logic connector but still have 169 volts on the large cap. Did I loose the voltage because of the broken trace?Last edited by davg; 09-18-2012, 07:32 PM.
Comment
-
Re: Broken Trace
looking at your pictures that leg of that copy does not go to that resister if you get a strong light and look at a cleaned up pcb you should be able to see where it should go witch I think is to D106 looking at D106 from the top of the board it looks like D106 may be faulty and also I would be checking most of the silicon around that area and check all the caps around there.
popeye
Comment
-
Re: Broken Trace
Originally posted by popeye View Postlooking at your pictures that leg of that copy does not go to that resister if you get a strong light and look at a cleaned up pcb you should be able to see where it should go witch I think is to D106 looking at D106 from the top of the board it looks like D106 may be faulty and also I would be checking most of the silicon around that area and check all the caps around there.
popeye
I wasn't sure what pad was broken, b/c it wasn't marked.Muh-soggy-knee
Comment
-
Re: Broken Trace
Originally posted by popeye View Postif you get a strong light and look at a cleaned up pcb you should be able to see where it should go--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---
Comment
-
Re: Broken Trace
Originally posted by retiredcaps View PostI hold a board up to the sun so it shines behind the board and then take a photo of it. It works great for some boards.
Comment
-
Re: Broken Trace
I look at the picture, since that leg of the cap is negative, then it should go to ground of the primary side, see the picture.
What is the P/N of that IC, it looks like pin 2? is connected to ground also. need IC spec to find out. It also looks like there is a connected trace to the right of the PAD also.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
-
Re: Broken Trace
Originally posted by budm View PostI look at the picture, since that leg of the cap is negative, then it should go to ground of the primary side, see the picture.
What is the P/N of that IC, it looks like pin 2? is connected to ground also. need IC spec to find out. It also looks like there is a connected trace to the right of the PAD also.
Comment
-
Re: Broken Trace
So right now the negative leg of that cap and the trace that I indicate are new all connected to the ground trace?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
-
Re: Broken Trace
Originally posted by budm View PostSo right now the negative leg of that cap and the trace that I indicate are new all connected to the ground trace?
Comment
-
Re: Broken Trace
"Can I run a jumper to one of thes negative points and get the same results"
Do you mean that you have already jump the negative leg of the cap and the trace to the ground trace as shown in my picture and it still does not work?
I will look tomorrow to see if I have the same board laying around in my part bins.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
-
Re: Broken Trace
Originally posted by budm View Post"Can I run a jumper to one of thes negative points and get the same results"
Do you mean that you have already jump the negative leg of the cap and the trace to the ground trace as shown in my picture and it still does not work?
I will look tomorrow to see if I have the same board laying around in my part bins.
Comment
-
Re: Broken Trace
Can I see that section of the trace that I have readlined to verify, the picture you posted was not clear enough. I still have to look up the spec of the IC. You can connect the negative leg of the cap, but not the trace until I can see the picture clearly, but I believe that broken trace is the ground trace.
So far no luck with that IC EA530 P/N search.
By the way, what is the make and model of this monitor?Last edited by budm; 10-05-2012, 09:58 AM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
Comment