Broken Trace

[davg]

Re: Broken Trace

Thanks budm you are right I do read 0 Ohms on pad 2. I also read 12.07 on 4, 11.04 on 6 and 16 Ohms on 8. pads# 5 goes to 39 to ol The other are ol Is this normal?

[budm]

Re: Broken Trace

If you at the picture, the bottom right is pin 1, bottom left is pin 8. So pin 2 is the second pin up, if you use an Ohm meter and measure pin 2 and the ground trace, it should read 0 Ohm.

[davg]

Re: Broken Trace

They are still not clear enough for me to trace out the traces. I need good close up of this section, main thing is that they have to be in focus.
By the way, I think the IC may be TEA1530

So if the IC is TEA1530 pin 2 is ground? How to determine pin 2?

[davg]

Re: Broken Trace

They are still not clear enough for me to trace out the traces. I need good close up of this section, main thing is that they have to be in focus.
By the way, I think the IC may be TEA1530

Thanks budm try this one

[budm]

Re: Broken Trace

They are still not clear enough for me to trace out the traces. I need good close up of this section, main thing is that they have to be in focus.
By the way, I think the IC may be TEA1530

[davg]

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?

I don't know if these are of any help. (Not as steady as I use to be)

[budm]

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?

[davg]

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.

Thanks budm I appreciate it. I tried soldering the negative leg of the cap to that trace only but as I indicated I am not getting a connection. So should I connect the negative of that cap to a negative trace and also that broken trace to a negative trace?

[budm]

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.

[davg]

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?

So I thought but it would seem I am not getting a good connection at that trace. Can I run a jumper to one of thes negative points and get the same results? I do I have to attach it to the proper trace?

[budm]

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?

[davg]

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.

Thanks budm I can't read the p/n on the IC The top # looks like EA530A but I can't be sure I am looking through a lighted magnifiying glass still too small to read. That line you indicated is a trace and I have since soldered the negative leg to that point but the difference is the same no voltage to the logic pin?

[budm]

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.

[davg]

Re: Broken Trace

I 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.

Thanks retirecaps I tried looking through it with a bright light (Photograph lamp) but cannot see where that trace goes. I though it went to the IC U101 as indicated early and I ran a wire to it no change still no voltage to the logic connector. Is there a schematic somewhere around for this board? Its a XP-04804-A

[retiredcaps]

Re: Broken Trace

if you get a strong light and look at a cleaned up pcb you should be able to see where it should go

I 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.

[Jasgriff]

Re: Broken Trace

If the trace goes to the pin of the IC then it is definately do able. Make sure it definately does before soldering though.

[ben7]

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

Ahhh, my mistake!

I wasn't sure what pad was broken, b/c it wasn't marked.

[popeye]

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

[davg]

Re: Broken Trace

Thanks looks to me it may go to U101? Is that doable?

[Jasgriff]

Re: Broken Trace

Hi, looking at you very first picture on the bottom of the power board before you changed the capictor it should not have been connected to that reistor. There doesnt seem to be a trace going to it at all. I think thix is where you issue is.