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Actinic channel not working
Posted: Tue Mar 11, 2014 5:29 am
by davaraj
Recently I had a power outage and when the power was restored I found the actinic channel not working. The wavemaker connected to this channel does not spin. Also the wavemaker connected to the daylight channel just spins without any waveform. Luckily I had bought an extra relay box earlier. So I connected everything from the old relay box to the new one and the wavemakers are functioning as before. How do I rectify/ repair the actinic and daylight channels. Is it possible?
Dr Davaraj
Re: Actinic channel not working
Posted: Tue Mar 11, 2014 8:30 am
by rimai
That looks like your chip may have gone bad.
If you open the relay box, you will see a LM341 chip. You must replace that one.
Re: Actinic channel not working
Posted: Tue Mar 11, 2014 10:24 pm
by davaraj
rimai wrote:That looks like your chip may have gone bad.
If you open the relay box, you will see a LM341 chip. You must replace that one.
Thanks Roberto.
Where do I locate the chip? Is it on the other side of the circuit board? How do I access the other side as there are no screws to take out.
Re: Actinic channel not working
Posted: Tue Mar 11, 2014 10:32 pm
by davaraj
Re: Actinic channel not working
Posted: Wed Mar 12, 2014 5:48 am
by davaraj
rimai wrote:That looks like your chip may have gone bad.
If you open the relay box, you will see a LM341 chip. You must replace that one.
Roberto,
The only chip that I can see is LM358P. Is that what I have to replace?
Re: Actinic channel not working
Posted: Wed Mar 12, 2014 5:50 am
by davaraj
davaraj wrote:rimai wrote:That looks like your chip may have gone bad.
If you open the relay box, you will see a LM341 chip. You must replace that one.
Thanks Roberto.
Where do I locate the chip? Is it on the other side of the circuit board? How do I access the other side as there are no screws to take out.
Never mind. I managed to take the circuit board out from the main cover.
Re: Actinic channel not working
Posted: Wed Mar 12, 2014 5:56 am
by davaraj
The jumpers are connected to analog. Can I change it to PWM to run the Jebao wavemakers?
Re: Actinic channel not working
Posted: Wed Mar 12, 2014 6:01 am
by davaraj
Re: Actinic channel not working
Posted: Wed Mar 12, 2014 6:20 am
by lnevo
The Jabeo's can run as PWM or Analog. You can try changing to PWM to see if that functionality still works... not sure what the chip that Roberto is asking to replace does...
Re: Actinic channel not working
Posted: Wed Mar 12, 2014 8:09 am
by rimai
Yeah, that one. Sorry for the wrong chip. I was typing on the road
The markings are inverted. So, Analog is not really analog. It is in fact PWM.
Re: Actinic channel not working
Posted: Thu Mar 13, 2014 12:13 am
by davaraj
rimai wrote:Yeah, that one. Sorry for the wrong chip. I was typing on the road
The markings are inverted. So, Analog is not really analog. It is in fact PWM.
Thanks Roberto,
I changed the chip for a new one and now both dimming channels are working as before.