I bought this game in non working order and with no battery cover. I was able to get it working through methods I have learned by working on theses type of games.
I took the game apart and cleaned all the game play contacts. I dremeled off any corrosion or oxidation that was on the battery contacts. I also bent the batterry contact tabs so that they fit snugly and that ensures much better battery contact.I also found a original battery cover and installed it. Game works and sounds great.
See photos for some of the work I did on it. The item "Nintendo tabletop snoopy game, taken apart and cleaned" is in sale since Friday, May 06, 2016. This item is in the category "Toys & Hobbies\Games\Electronic Games". The seller is "mattbarl_x8gqjug" and is located in Philadelphia, Pennsylvania. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, RU, IL, to Mexico, to New Zealand, PH, SG, to Switzerland, NO, SA, UA, AE, QA, KW, BH, HR, MY, CL, CO, CR, PA, TT, GT, HN, JM.