So I've been running a Digital Greenhouse 600W HPS system for a little over 3 months now. I had to replace my 1000W Sun System because of heat issues, and I'll be darned if I don't actually get better yields on the first run with the 600. It ran flawlessly until Thursday night, when it just refused to light up the bulb. The next day I went to the local grow store and they tested my bulb for me, and it lit right up. The guy even said "damn, that's bright". So I figured it was my ballast. Shit, I bought it online, I'll have to send it back, what am I going to do until then? It's the dead of summer, that 1000 will cook my girls. So I bit the bullet and bought a brand new Lumatek 600W digital ballast from them.
I took it home and plugged it in my system, and turned it on expecting the familiar buzz of HPS ignition. Instead, I got zilch, nothing. With the bulb that lit right up 2 hours before. My next thought was a possible short or open connection in the lamp cord. So I grabbed my multimeter and did a continuity test from the plug end to the lamp socket. All 3 conductors were fine.
Now here's my final theory... I've heard of some brands of bulb not working very well with digital ballasts. My bulb is a GrowBright from HTG (eBay special). When they tested it at the grow shop, they used a standard tap and coil ballast. I did notice the high-pitched whine coming from the bulb that other people have noticed a few weeks before it stopped working. Is it possible that this bulb has been vibrated for too long at a frequency that eventually rendered it inoperable with the high-frequency digital pulse, but would still let it operate with the 60hz tap and coil ballast? If this is the case, there may be nothing wrong with my first ballast and I just need a new bulb.
Any experience?
I took it home and plugged it in my system, and turned it on expecting the familiar buzz of HPS ignition. Instead, I got zilch, nothing. With the bulb that lit right up 2 hours before. My next thought was a possible short or open connection in the lamp cord. So I grabbed my multimeter and did a continuity test from the plug end to the lamp socket. All 3 conductors were fine.
Now here's my final theory... I've heard of some brands of bulb not working very well with digital ballasts. My bulb is a GrowBright from HTG (eBay special). When they tested it at the grow shop, they used a standard tap and coil ballast. I did notice the high-pitched whine coming from the bulb that other people have noticed a few weeks before it stopped working. Is it possible that this bulb has been vibrated for too long at a frequency that eventually rendered it inoperable with the high-frequency digital pulse, but would still let it operate with the 60hz tap and coil ballast? If this is the case, there may be nothing wrong with my first ballast and I just need a new bulb.
Any experience?