Unable to center horizontally after Color Classic Re-cap

[thegarse]

Hello, I recently performed an unsuccessful recap on the analog board, when I powered on RL54 started to smoke so I turned everything off. Recently I re-checked ESR on all caps, triple checked polarity, replaced the 30 ohm 4w resistor on RL54 (there is some confusion here as the fried resistor I pulled was 30 ohm but I see multiple sites indicate a 330 ohm resistor is used there). Reflowed a few joints, reinstalled board, winced, then powered on. It didn’t fry the resistor this time. But now my horizontal centering pot doesn’t seem to have an effect/change on the horizontal positioning on the screen. Bad pot? Or bad something else within that circuit?

 

[thegarse]

Removed the pot for centering horizontally, it measured appropriately out of circuit. Could a load affect the pot? What components control horiz that I can test? 

 

[Plasticoat]

I feel your pain,  these damn machines are so temperamental, I’ve just recapped analogue board and it was working fine, then this morning , hard disk not recognised, and later no power!

I hope someone can help you, I have a feeling the pot is not at fault. 

 

[thegarse]

This may or may not be associated but I noticed this inductor (located at LL2) came off it's glue/base and was very wiggly, it is somewhat close the yoke connector but I have no idea what it is. I'd figure replacing it couldn't hurt but I don't know what it is or what the 95 represents. My transistor tester seems to not read it correctly and I can't seem to find a reference for LL2. 

 

[techknight]

95 Microhenry. 

It is also very unlikely it is bad, unless the legs are broken clean off and you have nothing to solder to. 

 

[thegarse]

Can someone with a CC board tell me what the reading on PP1 is, I have a feeling this is related based on a section in https://powercc.org/640x480/

 

[thegarse]

Re-glued the inductor back together, reinstalled and same issue (I didn't expect anything different). PP1 isn't easy to get to so I'd rather set it using a MM once someone is able to provide a solid reading. 

 

[thegarse]

Fixed update:

I went on a wild goose chase and it paid off. Traced the pot on the underside of the board testing all resistors. This little dude measured 9Mohms. That can’t be right. Found a reference guide online (which can be wrong btw) that said it should be 1k ohms. Used the rework station, replaced resistor using salvage parts, turned on, winced again, this time I had horizontal adjustment! Wow, what a ride! Thanks to all that helped!

 

[cheesestraws]

well found!

 

[techknight]

Yea, I can see the hole blown in it. 

Thats weird how that happened. :-/