stuart.thompson Posted September 1, 2010 Share Posted September 1, 2010 Hi, I currently have two Futurelight MH-660 on my bench here. Both are showing same fault, when you turn them on the reset fine and strike the lamp. After about 5 mins the relay clicks off shutting down the lamp and error code FtEr shows up followed by HEAT. I have looked in manual and it says ambient temperature is 40° C or more. As I cannot locate any thermals in the base I am assuming it is a fault on the temp sensor in the head with the light sensor on the same PCB. Has anyone seen this problem to comfirm it is most likely this part that is faulty and does anyone know where I can buy spares for futureligths ? Cheers Stuart Link to comment Share on other sites More sharing options...
niclights Posted September 1, 2010 Share Posted September 1, 2010 It's really common for the diode to fail (turns yellow). If you search here you'll find more info on it. Link to comment Share on other sites More sharing options...
stuart.thompson Posted September 2, 2010 Author Share Posted September 2, 2010 I have fixxed it now, turns out someone had put the light and heat sensor on the wrong side of the metal plate between the lamp and the fan so the sensor was getting too hot and cutting the lamp out due to thermaling. Now it's on the fan side the unit is working fine and the temp readout is stable at 40' Link to comment Share on other sites More sharing options...
David Duffy Posted September 2, 2010 Share Posted September 2, 2010 Unless it's been replaced recently, change the sensor anyway. These are all old units now and the sensor can fail once the unit's been running for a while. Link to comment Share on other sites More sharing options...
Don Allen Posted September 3, 2010 Share Posted September 3, 2010 I service Fururelight MH840 that were made by Robe. I get my spare parts from ULA Australia who supply most spares from the Robe 575 wash and ULA get any specific Futurelight parts such as microcontrollers come from Robe UK . Link to comment Share on other sites More sharing options...
stuart.thompson Posted September 3, 2010 Author Share Posted September 3, 2010 Unless it's been replaced recently, change the sensor anyway. These are all old units now and the sensor can fail once the unit's been running for a while. Yea I changed the light sensor while I was there, they had gone yellow and for the sake of 75p for the part it seemed like a good idea to help the unit last longer before it breaks again........ Link to comment Share on other sites More sharing options...
Ashley R Posted October 30, 2012 Share Posted October 30, 2012 To drag up a slightly older thread. What part is the Light Sensor? Looks like just a waterclear LED to me.... I think its time for some of my movers to have theirs replaced. Link to comment Share on other sites More sharing options...
darkelf151 Posted October 30, 2012 Share Posted October 30, 2012 Yep, thats the one, looks like a clear led on a small pcb (inch x half inch) mounted next to the lamp.... To drag up a slightly older thread. What part is the Light Sensor? Looks like just a waterclear LED to me.... I think its time for some of my movers to have theirs replaced. Link to comment Share on other sites More sharing options...
Brian Posted October 30, 2012 Share Posted October 30, 2012 According to the service manual that part you want is... Kingbright L-932P3BT ...which is a phototransistor. Data Sheet here. That part looks to be obsolete but the other part number listed on the datasheet above, L-932P3C, seems to be widely available for not much money. I don't have time at the moment to look what the difference is. Link to comment Share on other sites More sharing options...
gafferted Posted October 30, 2012 Share Posted October 30, 2012 I've replaced quite a few of these with BPW85C phototransistors and they seem to work fine Eddie Link to comment Share on other sites More sharing options...
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