Quote:
Originally Posted by luRaichu
I think it may also be an issue of the tube drawing TOO much current. Because the picture looks brighter post-recap. Almost too bright. It actually gets less focused.
|
It will look less focused when the brightness and contrast is higher, that's normal. definitely turn it down to something that looks "normal" if it's gotten brighter after replacing caps.
I agree with the other post about the supply caps. Pull and test any electrolytics in the supply. That's 802 803 804 805 in the 130 V, 502 in the 12V, and all those other small voltages, C558 C203 C307 C564 C1603 C1604
Pay special attention to the caps shaded in grey
If you don't have an LCR meter, you can buy
one of these cheapo component testers off ebay or amazon (any of them are the same not just this link)
It's not going to be super accurate, and it can't go up super high in capacitance, but it will at least give you a go-no-go reference for telling if a cap is super high ESR or open or shorted in some way
Also you might want to test the supply transistors. Q801, Q802, Q552 You can either test each leg just to confirm they are functioning as transistors still, but those cheapo component testers will quickly tell you if they are probably still working or not as well