If the TV has no power, technicians check the main fuse and inspect the STR regulator and surrounding electrolytic capacitors for bulging or leaks.
Sharp TVs are famous for their protection circuits. Common triggers include: Faulty vertical IC. Dried-out capacitors in the B+ (115V–125V) line. Defective Horizontal Output Transistor . Service Mode Access
Technicians often encounter specific "protek" (protection) issues where the TV shuts down shortly after power-up. Skema Tv Sharp Alexander Slim 2
Commonly features the STR-W6553 or STR-W6753 regulator IC.
To adjust geometry (height, width, centering) or white balance, you must enter the Service Mode: Fixing Your Sharp Alexander 21-Inch TV: A Complete Guide If the TV has no power, technicians check
Often the TT2140 or MD1803DFX .
Popular replacement types include JF0501-32601 or similar variants depending on screen size. Common Troubleshooting & Repair Dried-out capacitors in the B+ (115V–125V) line
Typically uses the LA78040 or STV9302 IC.