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  1. partyanimallighting

    PCB needs repairs

    Hi QC, I hear a click when the pcb is powered down and I can feel the vibration of the relay also when my finger is on it when I power down. I already swapped out this relay with the one from the other working pcb so I know it's working. The relay isn't really hot, just warm, but I can't touch...
  2. partyanimallighting

    PCB needs repairs

    Hi Kris and CC, here are the readouts as you requested. A - 17.7VDC B - 17.7VDC C - 17.7VDC D - 17.7VDC E - 0.02VDC F - 0.03VDC G - 0.03VDC H - (-)0.002VDC J - (-)0.002VDC K - 0.044VDC M - 15.9VDC N - 17.7VDC P -12.36VDC The relay is warm to the touch, the diac (bottom left) is hot and the...
  3. partyanimallighting

    PCB needs repairs

    Hi guys, Here are the pictures of the pcb with some of the components removed and afterwards loaded. The yellow arrows show the components that were replaced. I'll run those tests and get back to you in a bit...
  4. partyanimallighting

    PCB needs repairs

    Hi guys, I replaced all the components and tested and .... nothing. Same problem. I'll run all the recommended tests and get back to you with the results. I did find an open through-hole on the relay side and repaired this but that did not help. I know it's a simple problem but because of my...
  5. partyanimallighting

    PCB needs repairs

    Hi Kris, Hi Cocacola, got all the parts that I removed last night. On checking the empty pcb, I am getting the required 12VAC into the bridge rectifier and about 14VDC out so that seems fine for now. I also see that the - from the bridge rectifier feeds one cap and the + feeds the other. Should...
  6. partyanimallighting

    PCB needs repairs

    Hi guys, the linear regulator in the working pcb is marked L7805CV WCC14922 MOROCCO and the one in the faulty pcb is marked 7805A. But these were swapped out between pcb's and they both worked in the functional pcb. To Kris, to test, I just power up the faulty board next to the working board...
  7. partyanimallighting

    PCB needs repairs

    So this helps? I'll pick up new replacement parts tomorrow and check in before I start to re-install so that I can benefit from your guidance and wisdom, O wise ones. See you tomorrow....
  8. partyanimallighting

    PCB needs repairs

    Red to blue ~ open. Red to green ~ continuity. Red to yellow ~ open. Here are the pix also. As you can see, I pulled a few parts for replacement. Besides the pcb being faulty, a large part of the problem has to do with my inexperience...
  9. partyanimallighting

    PCB needs repairs

    - to the left, + to the right and 12VAC center.
  10. partyanimallighting

    PCB needs repairs

    Hi Cocacola, 18VDC.
  11. partyanimallighting

    PCB needs repairs

    Hi Kris, I tested both mustard colored caps, 102 and 474, one side to the other and one measures open circuit and I get a climbing resistance reading on the other then it goes open circuit. Is this faulty? I'll get the parts tomorrow beforehand, do exactly as you suggested and give you the...
  12. partyanimallighting

    PCB needs repairs

    Hi Cocacola, I'm getting 18V at the blue circles and 0V at the green. Can't give you the red reading as the caps are out the pcb now.
  13. partyanimallighting

    PCB needs repairs

    Hi Kris, here's my plan. I removed the electrolytics and re-tested the through-holes and they are fine. There are three of them and I tested them for continuity from one side of the pcb, along the trace on the other side to the next device in line, which was the ground trace, a motor lead and...
  14. partyanimallighting

    PCB needs repairs

    Hi Kris, I really believe the problem lies with no power going into the 7805 and not with the 7805 itself. Although a novice at this, I understand what you're saying about the through hole. This carries the signal from the bottom of the pcb to the top to supply the traces located on the top of...
  15. partyanimallighting

    PCB needs repairs

    OK. I removed the relay and posted pix so that the traces are visible: http://www.4shared.com/photo/hbPdQEG_/Follow_Spot_250_040.html? Cocacola, I mentioned before I'm not getting 18V or 5V at the 7805 so the pcb is non-functional, same as before. I am getting 18V at one cap and 0V at the...
  16. partyanimallighting

    PCB needs repairs

    That's what I did with the above results. All the IC's were removed and the pcb was tested with the 555 in, then retested with the 555 out and the other IC's remained out of the board. And I'm not getting 5V anywhere near the 7805. I'm getting 18V up to one of the large caps but not on the...
  17. partyanimallighting

    PCB needs repairs

    OK Cocacola, here are these results. I tested with and without the NE555, live and powered down: With NE555 in socket (live): Voltage at 18V leg: 0.1V Resistance: 2.4KOhms Voltage at 5V leg: 0V Resistance: 180KOhms With NE555 in socket (powered down): Resistance @ 18V leg: 224KOhms Resistance...
  18. partyanimallighting

    PCB needs repairs

    Hi Kris, I was checking the voltage before from center pin to left and to right on the 7805 and I assumed that was correct. I re-checked as you advised and the results are the same: On the good pcb, 18V and 5V. On the bad pcb I'm getting a negative reading of -0.03V which I found strange. And...
  19. partyanimallighting

    It's broke...

    Hi Clueless, here's the thing. The thermal fuses I normally deal with look like this: http://www.cantherm.com/products/thermal_fuses/sdf.html : and have a thermal value in degrees marked on the side. Once the cutoff in the unit does not function and the heater heats up anything over this value...
  20. partyanimallighting

    PCB needs repairs

    Hi Kris, didn't mention that the 18V on the electrolytics in on the good pcb. I'm getting 18V only on one electrolytic on the defective pcb.
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