| Electronics > Repair |
| PLD getting hot |
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| kraka:
--- Quote from: fzabkar on September 27, 2024, 11:01:17 pm ---It looks like there is something wrong with the 5V regulator. Is it getting hot? The Altera device must be getting power from somewhere else. I think you need to investigate the power pins of the ICs in order to determine how they are powered. --- End quote --- No, it is not getting hot at all. Now it is off the Card. I have de-soldered it and left it on the side. For the investigation : I can do this. Do you mean the pins of ALTERA ? And when you say: "how they are powered", do you mean to search-trace the buses on the board-Card ? And by following these buses, find the components to which they (the pins of ALTERA) can be connected, and give power to the ALTERA? |
| fzabkar:
I don't think this PCB can be repaired. All you're doing now is a post mortem examination. |
| kraka:
I refuse to accept that this PCB is dead. Ιt is just sleeping... |
| kraka:
ΟΚ As I said in my last reply, in response to fzabkar, the card did not die, but just slept. The card was wake up or resurrected. Call it whatever you want. The suspicions I had that the PLD had, long before I experimented with the card, been damaged by a faulty PSU, probably turn out to be true. It was repaired by "transplanting" from a donor card. Α forum member gave me this idea and he really helped. It was very difficult to find such a similar card. I found it in an old shop and although it was sold only for spare parts, gave me its PLD and replacing with it the short-circuited PLD of my own original card I made this card work again. Thanks everybody for help. |
| wraper:
I suggest replacing vreg before trying something else. Lack of one supply voltage may cause funny business and heating of parts powered from somewhere else. |
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