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  1. H

    How to troubleshoot single dim bulb/socket on Delco radio pcb?

    Here is one other thing I have noticed on your photo with the bulbs illuminated. If you look at the upper right most bulb and then go across to the left, those bulbs look relatively brighter than the ones on the bottom row. The second row looks brighter too. The third row, to me from the pics...
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    How to troubleshoot single dim bulb/socket on Delco radio pcb?

    They sell bulb replacement packs for those radios. You can even get them in different colors. Some of the replacements ARE LED's, but many of the 2004 model years still used incandescent bulbs in radio illumination displays. I suspect the OP has probably purchased a recommended replacement...
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    How to troubleshoot single dim bulb/socket on Delco radio pcb?

    The reason I wanted you to do that was to make sure the continuity between the bulb pins between the good bulb socket and the suspect bulb socket was actually there. And to make sure they were on the same circuit. There should be a very low ohm reading between the positive pin on an adjacent...
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    How to troubleshoot single dim bulb/socket on Delco radio pcb?

    Have you tried the problem bulb in another socket that works correctly? Does the problem move after you do that? That will tell you if the bulb(s) is/are good for sure. I see you have tried more than one bulb there, but still. Are you able to take a dc voltage reading from the suspect socket...
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    Need help w/ home stereo

    The answer to your question is yes. You can use the amazon amplifier in place of your existing Pioneer home stereo system. It is outputting 40W per channel. That will be enough to power the speakers you have in the garage and even annoy your neighbors if you wanted to. Just remove the...
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    Triac Question

    Thanks for the input, Kellys_eye. I suppose I should have mentioned the LCR-TC2 was different (always lower) than all of my other test equipment units. Three other historically reliable digital multimeters and one component tester (a pic of it is above in the first post). I realize the results...
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    Triac Question

    Just for info, Bluejets, based on your reply, I ordered and received one of these a while back. I actually got the "upgraded" version TC2. The tester was so far out of range, when compared to my other test equipment, to include my multi-meters, I ended up sending it back. Caps were way off...
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    Hunter Ceiling Fan Receiver

    Thanks for your input, Mastrofus. Instead of continuing on with this, I found a suitable replacement remote control module and just used it. I have a feeling a fake triac (see my other thread "Triac Question" where I discuss this, if interested) may have caused damage to the main IC, since all...
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    Old Car computer (ECM) may be faulty

    Thanks. As expected, there are a ton of soldered pins on the back of that board. With the magnification limitations I can accomplish on my end, there isn't enough clarity and definition to adequately examine the board for what I am looking for, so it looks like you will have to do it. It...
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    Old Car computer (ECM) may be faulty

    Another cause on a car that old is a failed/failing/clogged catalytic converter.
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    Old Car computer (ECM) may be faulty

    Take a very clear picture of the other side of that board and let us look at the solder joints. The GM/Delco circuit boards from that period were notorious for having solder joints go bad after time. A "cold solder joint" is a common term for it, if you want to look it up. On your board the...
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    Wall Charger 120VAC to 5VDC

    Hi Edd. Thank you for the detailed explanation and troubleshooting information about how this thing works. There was a picture of the 8 pin IC in my initial post. It was outwardly intact and showed no signs of sink holes or cracking, so with no way for me to check it for sure, my initial...
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    Power Amp Repair Help - Fuses keeps blowing

    Any progress on this OP? Based on your first posting, you said there appeared to be smoke, after you powered up, from the bottom right side of the PCB where the smaller PCB is attached in your first picture above. Just above and to the right of the Mosfet numbered TR4 is a green resistor (it...
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    Wall Charger 120VAC to 5VDC

    You have completely lost me now.
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    Wall Charger 120VAC to 5VDC

    So this is an odd one, but a success, none-the-less. I removed the DP1804A, so I could look underneath it and follow all of the traces to know where they all went. After doing so, and soldering it back to the board, I powered the thing back up and started following the circuit traces, testing...
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    Wall Charger 120VAC to 5VDC

    I don't know why you would think that. If I understood your reply to me correctly, you would have preferred I NOT try to fix it and just buy another one.. My response was that my "first instinct" WAS to try and fix it. That was why I was here. The money for a new one was not the concern...
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    Wall Charger 120VAC to 5VDC

    I am. That's why I am trying to fix it. :cool:
  18. H

    Wall Charger 120VAC to 5VDC

    Hi all. My current project involves a relatively simple wall charger/power supply. The circuit board is not complicated at all. So far, I have tested each component on the board and all seem to be working properly. The only component I cannot test, with relative certainty of its proper...
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    PS5 power supply

    Before you do that, measure the output voltage from the power supply you purchased, and also make sure the pin polarity and output voltages are the same on both boards. They should be, but check to make sure. If the board powers up, let us know. As far as those components, the proper way to...
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    PS5 power supply

    I think he is talking about the other power supply he purchased, which we will assume is good. That's the one with the different output connection location on the pcb, just to see if the motherboard energizes, before he continues on with the troubleshooting of the failed power supply above. If...
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