The Wannien 101v0 is suspiciously similar to the Tenma 72-860 and various generic "Mastech" or "Zhaoxin" models.
If you cannot find a schematic for "Wannien," search for "Tenma 72-860 schematic" or "Zhaoxin PS-305D schematic". You will likely find that the transformer pinouts, voltage regulation chips, and capacitor placements are identical. wannien 101v0 power supply schematic free
Wannien (often associated with Tenma and other rebranders) manufactures budget electronics. Unlike big names like Rigol or Tektronix, service manuals for these units are not typically hosted on public FTP servers or official websites. The Wannien 101v0 is suspiciously similar to the
If you are looking for a free schematic, your best bet is to look for clones. In the world of cheap electronics, the casing might change, but the internal PCB is often identical across several brands. Wannien (often associated with Tenma and other rebranders)
If you have raw DC (high voltage) before the transistor, but zero regulated output, the LM723 may be dead.
Since you likely won't find a PDF schematic, use this failure guide to identify components visually: