While everyone wants to save $$$ sometimes it is much less of a hassle to just have someone else who knows how to change out the batteries do it.
I had ATS Electronics change out one or two in the past and they are top notch to do business with.
with these receivers getting more valuable and more rare to find you really need to ask if the risk is worth it all.
Those who are running on "borrowed time" by not having their batteries replaced will find outmuch sooner then later how it could have been if only they would have heeded the sage advice from others who have been saying to change out those batteries now and not later.
Used to be Motor
ola would replace the board or chip with a new unit id number in it but that is no longer the case when you lose that unit id number. Motorola has washed their hands of these receivers and could care less what happens to them now.
That comes from the folks at ATS Electronics who have tried to get Motorola to put in new unit ids for peoples receivers.
I lost one 920 unit id by waiting too long so I can speak from experience, I was however lucky to have 6 other 4D receivers here that are used on other dishes so I now no longer have a spare one when one needs to be taken off and have something done to it.
Maybe I should try going on e-bay and bid up one or two of these 4d receivers so I can have a spare and help increase the cost of them a bit...