Hey there! It sounds like you're having trouble finding someone to repair your zinsco panel and you're considering doing it yourself. While it's always a good idea to hire a licensed electrician for any electrical work, there are some steps you can take to try and find the parts you need.
Identify the parts you need - In order to repair your busbar and breakers, you'll need to identify the specific parts you need. This may require taking a closer look at the panel to determine the make and model of the components.
Search for parts online - Once you know what parts you need, you can search online for suppliers that carry them. Some good places to start include Amazon, eBay, and specialty electrical supply stores.
Check with local electrical suppliers - You may also want to check with local electrical supply stores to see if they carry the parts you need. They may also be able to special order parts for you if they don't have them in stock.
Consider purchasing a used panel - If you're having trouble finding the parts you need, you may want to consider purchasing a used zinsco panel that can be cannibalized for parts. However, it's important to note that zinsco panels have been known to be problematic and are no longer approved for installation by most building codes.
Remember, when it comes to electrical work, safety should always be your top priority. If you're not comfortable working with electricity or you're not sure how to repair the panel, it's best to hire a licensed electrician to do the work for you.