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JRDG Coherence II; Battery Display Issue

We had a power outage here in New York that lasted 3 days. I shut down the system, but didn't think to power down the CII. It is operating fine, but neither the LOW or FULL light is illuminated for the battery. The power came back on Tuesday at about midnight, so its been receiving AC for nearly 40+ hours. Does this mean the battery is no longer holding a full charge? Will it affect performance? Frankly, I didn't notice whether the light was illuminated before the power outage

Three additional details. When I power down the PS, it automatically powers up within about 5 seconds. Also, the FULL lamp comes on for a second then goes off. This at least tells me the lamp is functioning. Lastly, when I switch from AC to Battery, there is no discernible fall off in performance. Basically, everything seems to be working, but the LOW/FULL lamps are dark.
128x128stew3859
guidocorona
4,298 posts
 
Stew, it is likely that your depleted batteries did not deliver an optimum voltage to Coherence any longer.... Hence a comparatively more dynamic performance with fresh batteries. G.
guidocorona
4,298 posts
 
All, if anyone needs replacement screw fasteners for Coherence top and back plates, the correct type is:

#6-40 BUTTON HEAD SOCKET CAP SCREW x 3/8".

Please note that these are not common 4-40 screws, and they may not be stocked by all consumer-grade hardware outlets. G.
We'll put a few in the mail to the address below.
stew3859's avatar
stew3859 OP
119 posts
 

POST SCRIPT:

So here it is almost six years later and the same thing happens, i.e., power outage and I neglect to remove the AC cord from the power supply. I knew I had had this issue before, so I researched the JRDG website. The manual seems to suggest that the unit can survive off battery power 15-18 hours, and since the power company was indicating a restoration time of about 7 hours, I  decided not to remove the AC from the unit. When the power was restored, the unit powered up, but as before, the AC lamps did not illuminate, it neither read "LOW" or "FULL". So I'm thinking, here we go again, I killed another pair of batteries which I do not believe are even a year old. The reason I am writing is because this time, much to my pleasant surprise, the "FULL" lamp came on after about an hour of the AC being applied to the unit. This suggests to me that this time, my batteries were strong enough to survive this depletion whereas the earlier set must have been much older and weaker. So the take away for anyone experiencing this problem is that if after a few hours, neither your "LOW" or "FULL" lamps have illuminated, you need to replace the batteries. On the bright side, if the batteries did not withstand the depletion, they were probably due to fail soon anyway. I hope I can find this post in 5 years, the next time this happens and I am doomed to repeat my stupidity.

ebm
9,311 posts
 
Why not call Rowland??
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