What is the burden of proving that the trial court's decision was wrong?

When a defendant makes a mid-trial motion to revoke his self represented status and have standby counsel appointed for the remainder of the trial, does the trial court have a duty to manage the trial? (California, United States of America)

What is the appellant's burden to prove that a judgment or order of the trial court was wrong? (California, United States of America)

What is the test for overturning a trial court's decision not to allow evidence to be admitted at trial? (California, United States of America)

Is there any case law that supports the argument that reducing the burden of burden on trial by reducing the length of time required for trial? (California, United States of America)

When reviewing a trial court's decision on the Miranda issue, does the court have to agree that a statement was obtained in violation of the Miranda Act? (California, United States of America)

What is the appellate court's role in determining whether a defendant satisfied his burden of producing clear and convincing evidence in the trial court? (California, United States of America)

What is the standard of review applied by appellate courts to a decision by a trial court to instruct or not to instruct a jury? (California, United States of America)

Can a defendant who failed to object to the trial court's decision to conduct voir dire in open court preserve the issue for appeal? (California, United States of America)

When a factual determination is challenged by an appellate court on the grounds that there is no substantial evidence to sustain it, can the appellate court substitute its deductions for those of the trial court? (California, United States of America)

In a motion for a new trial, is the trial court bound by the same principles as the court of appeal? (California, United States of America)