View Single Post
Old 29th Jun 2019, 9:26 pm   #12
jayceebee
Heptode
 
jayceebee's Avatar
 
Join Date: Jun 2007
Location: Durham, County Durham, UK.
Posts: 640
Default Re: Philips video monitor

Isolate pin 3 of the LOPT, if the squealing stops then it's highly likely to be faulty. From your picture it looks to be an AT2079/37591, it's equivalent is an HR7533.

John.
Attached Thumbnails
Click image for larger version

Name:	lopt.jpg
Views:	118
Size:	51.8 KB
ID:	185934  

Last edited by jayceebee; 29th Jun 2019 at 9:34 pm. Reason: more info
jayceebee is offline