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Old 06-01-2018, 07:06 PM
TinCanAlley's Avatar
TinCanAlley TinCanAlley is offline
Duck, you sucker!
Join Date: Sep 2008
Location: So Cal, CA
Posts: 640
Okay, so I am only now getting around to taking out the horizontal board and soldering the transistors into their mounts in hopes of getting rid of the unstable horizontal.

But before I do, I really think I'm onto something in trying to fix the jailbar problem. I've put it back on the scope and see solid ringing in the brightness limiter circuit. I also noticed that under normal blacks or dark screens, the jailbars are most visible. If the image goes to a deep black, think blacker than black, they disappear. I've noticed this on all material when the background goes to a deep black. I'm assuming this might have something to do with the brightness limiter. What do you think? If it is a possibility, can I upload that section of the schematics and get help identifying parts of the circuit to test/replace?

Pioneer SX-1080, Pioneer PL-115D, Pioneer CT-F9191, Pioneer RG-1, Wollensak 8050A, Akai 4000DS MkII, Pioneer CS-05 & Polk 1.2TL

Denon 5803A, Pioneer DVL-700, Pioneer CT-W603RS, Toshiba HD-A3, D-Link DSM-520, Dish VIP-722, Polk 1.2TL, CSi5, LS/fx, RT-800 and PSW-650
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