UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Sony KV-A2942U very soft focus in middle of screen

Retrorepair · 3rd Oct 2022, 7:26 am

I really had no idea the grille could bow on these, but I suppose anythings possible!

Could that explain the difference in distance between the beams from middle to edge? I'd assume not as surely the grill only masks the bleed amd doesn't actually deflect anything?

I'll work through the manuals steps anyway and either post the outcome here or let you know where I'm getting confused, I do appreciate the help.

I think the main things that confuse me are:

A: The difference between purity, V STAT and hexapole
B: The diagrams show RGB and arrows below pointing to a dot, is this saying turning in one direction makes them flip? Since the opposite seems to be BGR?

Also do I move both tabs in unison or separately? It's not really clear in the manual.

It's that extreme difference in separation I'm mostly concerned about. If the center is perfect, the rest of the screen seems totally wacky no matter what I do. I'll start from scratch anyway and see how I go.

3rd Oct 2022, 7:26 am	#21
Retrorepair Pentode Join Date: Apr 2019 Location: Denbigh, Wales Posts: 154	Re: Sony KV-A2942U very soft focus in middle of screen I really had no idea the grille could bow on these, but I suppose anythings possible! Could that explain the difference in distance between the beams from middle to edge? I'd assume not as surely the grill only masks the bleed amd doesn't actually deflect anything? I'll work through the manuals steps anyway and either post the outcome here or let you know where I'm getting confused, I do appreciate the help. I think the main things that confuse me are: A: The difference between purity, V STAT and hexapole B: The diagrams show RGB and arrows below pointing to a dot, is this saying turning in one direction makes them flip? Since the opposite seems to be BGR? Also do I move both tabs in unison or separately? It's not really clear in the manual. It's that extreme difference in separation I'm mostly concerned about. If the center is perfect, the rest of the screen seems totally wacky no matter what I do. I'll start from scratch anyway and see how I go.