partyanimallighting

Yes indyld, according to the component number, it's an SS14 diode and it seems to be feeding two AP2306GN Mosfets and I might assume that they're feeding the fans (??). One fan is working on startup and one fan static (sometimes jittering slightly). When I swap around the lamp terminals, the non-functioning fan powers up fine. I'm getting continuity from the SS14 from the anode to the + fan terminals and from the cathode to the - terminals and this diode seems to feed the AP2306GN mosfets. Shouldn't I get continuity from the gate output of each mosfet to the + pins on each fan terminal? I'm getting a high reading from the switch side of each mosfet to the + and - fan pins and no continuity on the gate side.

OK guys. New update. I tested each board installed in their respective units and the dousing of the lamp is definitely caused by the failure of the defective board to power up ONE of the lamp fans. I then checked the voltages on the majority of the components and the majority of voltages are consistent, with the exception of one component (not sure what type it is). On the functional board the voltages are 12VDC and 1.5VDC and the other (faulty) board it's 12VDC and 8VDC. Could this be the culprit? All the other voltages are equal. It's bottom right hand in the linked picture. https://imgur.com/a/jKqJHOk

Hi indyld, I'll send some links to some pix via a 3rd party fileshare in a bit. I'm hoping it's something simple like the regulator but I cannot find the component number anyway and it makes no sense to swap out the regulator from the working board. That's just plain idiotic to go screw around with the working board. Here you go. I included some pix of the regulator that I can't confirm. https://imgur.com/jwgqmV7 https://imgur.com/q1vrehv https://imgur.com/zPiUapX https://imgur.com/hr3ShUl https://imgur.com/acZ4E7a TD7591SADJ

Hi Jivemaster, they're pristine inside and out. Indyld, at $130.00, plus shipping to my Skybox, plus overseas shipping, handling, duties and taxes, makes hunting for the fault is the best option I have right now. The pcb is simple enough, 28VDC in, with a (unknown) numbered voltage regulator, a few caps, what seems to be a voltage filter and a u/p. To the rear of the pcb are 5 DRV8841 stepper motor drivers. I've tested both pcb's live and I'm getting 28VDC in and 12VDC out on both regulators but 3.5VDC on the fan terminals on the faulty one and no functions on the stepper motors. Hopefully, I can find the problem (with your assistance PLEASE!! ) BTW, is there an option to upload images to my posts? I am only getting options to post images via links. Let's try a simple copy and paste.

Hi indyld, the temp sensor is inside the lamp housing and I already tested it for continuity and then bypassed it too with the same result. As for the issues with temperature and heat issues, if one fan goes down, the unit will quit on you for sure. I think I narrowed down the problem anyway. It seems to be the MH078E driver board, which controls focus, zoom etc along with the lamp fans located in the front of the unit. I tested working and non-working units side by side and realized that there was no focus or zoom function, which is controlled by this pcb, along with the two fans. Output on the functioning unit at the lamp terminals was around 11VDC but on the faulty unit, only 3.5VDC, hence the fans not spinning. So it's a voltage issue on this pcb that's causing the issue. And yes, just to confirm, I swapped the pcb's around and the lamp issue followed it into the working unit and the problematic unit functioned perfectly. So now I have to try to find the faulty component on the pcb, check for availability, replace it and see what happens.

It seems that the fixture thinks it's overheating. The fan douses after a few seconds on an initial cold startup so it's definitely not an overheating issue. There are two 60MM sensor fans to either side of the front of the head labelled "lamp fan" and these are twitching on initial startup but not spinning. So I suppose that's sending a signal to the unit to douse the lamp when it strikes. BTW, these fans are working fine in the functional unit.

Hi all, I'm just wondering if anyone is familiar with the Chauvet RH1 Hybrid unit and any lamp issues they may have with them. I've got one that strikes on startup and then the lamp douses after a few seconds. I tried swapping out the 60MM lamp fans, the main 92MM lamp fan, lamp and ballast with those from a known working unit with no success. I previously had issues with this unit with a faulty 60MM lamp fan that was causing the same issue but I've replaced all the fans and the problem has not been resolved. Any feedback will be greatly appreciated. partyanimallighting