A House panel on Tuesday found Representative Charles B. Rangel guilty of 11 counts of ethical violations, ruling that his failure to pay taxes, improper solicitation of fund-raising donations and failure to accurately report his personal income had brought dishonor on the House. After a public hearing Monday that was truncated by Mr. Rangel walking out in protest, an adjudicatory subcommittee of the House ethics committee deliberated for four hours before finding him guilty of all but one of the 13 counts against him. (Two other counts, involving Mr. Rangel’s misuse of House franking privileges, were merged into one.)