Hi everyone!
Three years ago I got a ZD-915 desoldering station which failed just after a few months of light use. During a short desoldering session, the station simply shut down, and since then it has been completely dead and unresponsive. The failure was silent, without any pops.
Due to a lack of time, I set it aside and didn't look at it.
Yesterday, I took it apart and did some basic measurements. The 18v terminal shows 0v. In addition, there is no visible damage to the board itself.
According to replies in 18VDC PSU has dropped to 10v - ZD-915 desoldering station, I concluded that a potential culprit could be the controller IC in these units, which is a CQ1565RT on my board. I bought the IC today, but haven't replaced it yet because I'm not certain that it is the problem.
I couldn't find a clear schematic for this PSU, so I feel like I'm going in blind. Any help in debugging this PSU is very welcome, and hopefully, end up fixing it.
Here are the front and back photos of the board:
Three years ago I got a ZD-915 desoldering station which failed just after a few months of light use. During a short desoldering session, the station simply shut down, and since then it has been completely dead and unresponsive. The failure was silent, without any pops.
Due to a lack of time, I set it aside and didn't look at it.
Yesterday, I took it apart and did some basic measurements. The 18v terminal shows 0v. In addition, there is no visible damage to the board itself.
According to replies in 18VDC PSU has dropped to 10v - ZD-915 desoldering station, I concluded that a potential culprit could be the controller IC in these units, which is a CQ1565RT on my board. I bought the IC today, but haven't replaced it yet because I'm not certain that it is the problem.
I couldn't find a clear schematic for this PSU, so I feel like I'm going in blind. Any help in debugging this PSU is very welcome, and hopefully, end up fixing it.
Here are the front and back photos of the board:
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