If the TV shows no standby light, the primary side is likely at fault.
Look for bulging or leaking capacitors on the secondary side. Even if they don't look bulged, their Equivalent Series Resistance (ESR) may have spiked. 3. Sound but No Picture (Flashlight Test Passes) vestel 17ips62 schematic new
Across this capacitor, you should measure approximately 310V to 330V DC (assuming a ~230V AC input). If this voltage is missing or severely low, the issue lies in the bridge rectifier, fuse, or the capacitor itself. 3. The PWM Switching Circuit If the TV shows no standby light, the
Check the primary switching MOSFET or the integrated PWM IC. Use a multimeter in diode/resistance mode to check for a short circuit between the Drain and Source pins. for most practical repair purposes
However, the situation is not entirely hopeless. Over the years, dedicated technicians have managed to locate and share versions of the schematic, albeit often for specific revisions. Several of the 17IPS62 exist, including R2, R4, and R3, each with slight variations in components and layouts. Fortunately, for most practical repair purposes, these diagrams are sufficiently similar to be used as reliable references.
If the standby light behaves normally and the TV responds to the remote but the screen remains dark, the LED driver section is likely faulty.
As one technician noted, "in zona cu vopsea neagra ai 3 coduri. Codul sursei este cel din mijloc." (In the area with black paint, you have 3 codes. The source's code is the middle one.). For example, a board may be labeled 17IPS62 with an additional barcode like 23367482 or 23581201 , which often corresponds to a specific revision.