From forum in Lenco Heaven
Many suggestions from this Sony deck’s owners.
After having seen schematic of TTS-2500,
I just replace almost electrolytic capacitors with new and reliable caps, also variable resistors.
Before …
… After
Replace diodes of motor drive circuit and make new main power supply board using switching modules.
This deck came with faulty neon bulb, so I’ve modified by using blue LED instead.
Next process just making new heavy wood plinth 😉