Hi . you can still buy a replacement handset for this model ,if that is what you would like to do .it will connect to your base .
If the screen is completely blank . it may just be a battery issue.
Hi . Amazon sell them , the only thing is you can't buy one ,as far as I know without a base station, but you can just use the handset and connect it to yours ,and save the new one in case you need it in the future.
Amazon sell it here. http://www.cordless-phones.uk.com/cordless-phones/cordless-phone-headset-packages/panasonic-8561-jabra-9120dg
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