Electronics > Repair
Yamaha RX-V473 repair. PS3 PRT: 094L [SOLVED]
Comp_Sci_hater:
You're right, i measured the voltages on the IC25 and they are as follows:
PIN NR PIN EXPECTED MEASURED
4 VDD 5.5V 5.57V
3 VOUT 3.3V 5.44V
2 GND 0V 0V
1 CE/CE 5.5V 5.57V
Is the ic gone? there is no input apart from 5.5V so something internally must be messed up i assume.
David_AVD:
With the unit unplugged from the wall, measure from pin 3 to 4 of IC25 on the Ohms range of your meter.
Comp_Sci_hater:
It jumps all over the place, it once reached 6M ohms and then started going down for some reason
Comp_Sci_hater:
Okay, im looking for a new regulator, i can get the original one but at an astronomical price. And im thinking that i dont really need a low dropout voltage one, because im supplying it with 5.5V anyway. Does anybody have a reccomendation for any good 3.3V regulators? Would a L1117-33 work well in this case?
Comp_Sci_hater:
UPDATE: I replaced the 3.3V regulator and the amplifier works perfectly! 8) 8) 8)
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