zoom 707II "low battery issues" + d unit restarts by itself!! hi everybody.. everybody can see m new to dis site.. my first post.. so i'l start rite away.. okay.. i bought my zoom 707II effects processor 6 months back. i din't check much but i think it was a bit used.. so d problem i starting havin after a month ws wenever i strummed my guitar(givson blue diamond) , d display wud flash "low batterY" n den d unit wud switch off by itself n restart . i ws not provided wid an original zoom adaptor.. so i used a local adapor(for fifty bucks) which ws marked 500 mA. now d unit requires power as follows: wid batteries.... 4 cells--6volts on adaptor.......9 volts dc supply 250 mA. i don't hav n amp.. so i use it wid my computer(akai home theatre).. now wen i first got dis prob.. i thought theres something wrong wid d adaptor.. so i changed it n hav changed about 6 adaptors till date..another thing is dat it starts flashing wen m using effects like powerdrive, or similar heavy distortion effects.. wen i use clean effects and not too much bass in d equalizer effect of processor, d problem arrives a bit later.. but after flashin five to six times...it restarts!! jst like dat.. i switched my adaptor voltage from 9volts to 12 volts.. it works fine for bout half n hour.. but after dat.. again starts flashing :"low battery"..wats d exact prob n can it b rectified.. please help me... i got this processsor (my first) after lots effort... help required!!