SLV-315 model. Problem with power light does not stay constant, clock blinks but other information on the display panel only flickers when pressing the power button. The cassette / tape loading mechanism does not load the cassette. Identified cause as in the power supply, replaced the capacitors on it.
Most likely you don't need to replace the main power capacitor which is the 400V 82uf since there is power (usually this type of high-voltage is the last to go bad, I left it there).
WARNING: If you are going to work on the power supply, make sure you use your multimeter's voltage (DC) function to drain the 400V capacitor first, because it could potentially storage enough charge even after the power has been turned off for a while to give you a nasty shock or burn. You can also use a high-watt resistor to drain it.
For sure you need to replace all the other ones because unless they are swollen at the top, you can't really tell if they are bad. I need to correct one thing I said in the video, that is the bulging bottom (rubber pushed out) does not mean it's bad unless it's completely pushed out. Many new capacitors have the rubber seems like pushed out, but that's just the way they are made. I know that some of the capacitors I removed are still functional, but given the age, it's easier just to replace them all. Here is a complete list so you can save some time:
Capacitor Voltage Capacitance
Identification
C110 400V 82uf (100uf also worked in case you have to)
C111 100V 1uf
C201 50V 100uf
C208 10V 2200uf
C202 16V 3300uf
C212 50V 100uf
C204 50V 1uf
C205 16V 1000uf
C206 16V 100uf
C207 16V 100uf
C213 6.3V 1000uf
C209 10V 100uf
C218 10V 100uf
