Yes. The problem is broken connections where the LED board is soldered to the rotor board. Feel free to e-mail me for more help firstname.lastname@example.org
If you can solder with a fine solder gun you can fix the problem!
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Try these..1...remove your telephone line from base unit and fix it into a working land phone and check whether is it having normal dial tone.If it's having engage tone(beep beep...)remove paralleled phones and re connect to cordless base unit.
2.If line is ok (normal dial tone with full volume) & still display indicates line is busy, your main base unit must be having faulty components inside.Commonly these defects happen in thundering or surges through telephone lines.You have to take full set to a repair shop.
I got my display to come on while on the base unit, by making charging contacts connect. When I did this, then battery indicated it was low, then though I had taken it out a working phone. Maybe the fact is one of charging units are not charging correctly if have several. I have a 3 system unit and it is the base that seems to have the problem.
Since, by default, you have either 4 or 8 lines minimum, do they appear on other phones and is there anything on the buttons? Press PROG and line 3 button. If the display shows CO 003, you have another problem. If they show blank, dial 0 3 and press ENTER. Do the same for line 4 (using 4, of course).
I had this same problem. It turned out to be a bad power adapter for the base unit. If you have another handset that has its own charger than the power adapters are interchangable. try swapping them and see if this fixes your problem.
OK, here's what happened. I had the same issue of the phone resetting when a call came in, I thought it was a power issue and through some testing it was not. Here's the fix...Menu \ system settings \ enter pin (if you haven't changed it it is 0000) scroll to factory default and reset. This fixed the problem somehow for me, make sure to write down any impotant messages because it will erase everyting (silly me). I hope this helps.
Hi Dan, Yes it is a very nice system, but like any device it is sensitive to electrical storms and power fluctuations. A surge or sag (AC power going up or down), can cause the sensitive digital chips to get damaged, and from my experience if you have tried resetting the unit, and your msg lites continue to flicker and the LCD is blank, it has some serious damage and needs repair or replacement.
If a new one is heating up that means theres an overload in the phone and will certainly burn out a new adaptor or if your saying the new adaptor you bought a couple of years ago is heating up the the diodes or filter inside the old adaptor is bad and replacing adaptor with a new one will fix it . Good Luck