Badcaps Forums - View Single Post - Bush idlcd26tv22hd 17PW15-8 issue

**R_J** · 01-10-2019, 07:17 PM

Check the voltage across C819 (220µf/450v) It should be about 400v If its only about 340v, The pfc circuit is not working.
Check Q803 and R829/830.
If you have 400 volts, check the resistance of Q813, Q814 & R971.

Using hot ground as ground (- of C819), check for VF_MAIN voltage on ic828 pin 3, then when power is pressed check for voltage on ic828 pin2. This is the VCC voltage for IC807, pin 15

01-10-2019, 07:17 PM	#4
R_J Badcaps Veteran Join Date: Jun 2012 City & State: ☻ My Country: Canada I'm a: Professional Tech Posts: 6,578	Re: Bush idlcd26tv22hd 17PW15-8 issue Check the voltage across C819 (220µf/450v) It should be about 400v If its only about 340v, The pfc circuit is not working. Check Q803 and R829/830. If you have 400 volts, check the resistance of Q813, Q814 & R971. Using hot ground as ground (- of C819), check for VF_MAIN voltage on ic828 pin 3, then when power is pressed check for voltage on ic828 pin2. This is the VCC voltage for IC807, pin 15 Last edited by R_J; 01-10-2019 at 07:35 PM..