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 4. GQ Hot Air Soldering Rework Station
 5200 - Glitchy Iron Temp Display
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Posted - 03/10/2013 :  10:14:54  Show Profile  Reply with Quote
Hi, I just received my new 5200 unit from MCUMall.

The hot air seems to be working well, but the temperature display for the Iron can only be described as "glitchy".

Example: I set the iron temp to 370C, turn off the unit for a few minutes. When I turn it back on, the display shows 503C, and will not change even if I play with the Iron temperature adjustments. However, if I slap the top of the unit, the temperature display will gradually come back down to 370C.

Example 2: Sometimes, if I set the temp adjustment to the lowest setting, and then I turn it up, the Iron temperature display will climb, but continually flash "503C" and come back to the real temperature.

Looks like there is a short, or bad solder joint somewhere. Have you ever seen this type of behavior? Is there anything I can do?
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1258 Posts

Posted - 03/12/2013 :  10:59:32  Show Profile  Reply with Quote
It seems the temperture sensor has contacting problem.

Check the connector first. Make sure your iron connector is clean and well connected.

If it is not a problem, then you may need to check internal connector on PCB, reconnect it then.
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