windbg outputs characters console nonstop

i'm building pos concentration used 200 locations right controlling .net 2.0, wcf syncfusion components gui.

two days ago hallowed concentration new location, pang remarkable stop application.

the concentration controlling record events exceptions, something happens it, there's always something log. case, record simply cut off. we've identical situations locations, nonetheless severely singular didn't occur some-more once twice, couldn't locate debug dump.

the mechanism during plcae rather opposite hardware setup, including splitter lpt out meant used both duplicate pos printer, displaying cost video monitor.

in plcae though, it's duty each 1.5 hours. i've attempted open windbg insert process, nonetheless here's uncanny thing, area where there's debug output, i snippet messages concentration produces, nonetheless there's also nonstop tide characters, specifically, "b0" repeats itself.

my problem i don't know where "b0" opening from, meant be. i think competence splitter, nonetheless i won't means exam until sunday.

hope someone have an thought clarify this.