Sony TC-280 Service Manual & User Guide - Download Here

1. Sony Support Website: Check the Sony support website to see if they offer a downloadable manual for the TC-280. Sony often provides manuals and user guides for their products on their support pages.

2. HiFi Engine: HiFi Engine is an online resource that hosts a large collection of manuals and documentation for vintage audio equipment. Check their website to see if they have a manual available for the Sony TC-280.

3. ManualsLib: ManualsLib is another website that offers a collection of manuals and user guides for various electronic devices. Search their database to see if they have a manual available for the TC-280.

4. eBay and Online Marketplaces: Sometimes, you can find physical copies of manuals for vintage equipment on online marketplaces like eBay. Search for "Sony TC-280 manual" or similar keywords to see if any sellers are offering the manual.

5. Vintage Audio Forums: There are several online forums dedicated to vintage audio equipment where enthusiasts share information, resources, and manuals. Join these forums and ask if anyone has a copy of the TC-280 manual that they can share.

Remember, some older manuals may not be readily available online, so it might take a bit of searching and patience to find what you need.