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| freshly Recaped lc 1 takes 3-5 minutes and aa coulple power cycles to do anything |
Posted by: Coleeau on 2020-08-19 02:41:22
i very recently recapped an lc 1, it was somewhat corroded but not too severe and i got it cleaned up. one thing is it takes 3-5 minutes to warm up and/or a few quick power cycles. everything is clean and all but one of the capacitors are nichicon (ordered wrong voltage on one so i used another new one in my parts bin) does anyone know why it is doing this?
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Posted by: Daniël on 2020-08-19 05:21:29
Did you recap the logic board, the power supply, or both?
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Posted by: Coleeau on 2020-08-19 06:53:02
just logic board. wasn't an issue before though
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Posted by: MrFahrenheit on 2020-08-19 10:08:13
Did you use electrolytic or tantalum caps ?
Have you tried reflowing the solder at each joint? When you soldered it did you use enough flux? Was there any traces visibly damaged? Could you have lifted any pads ?
Is it possible that some of your caps are bad ?
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Posted by: Coleeau on 2020-08-19 11:48:41
I used all brand new caps, all are nichicon minus one as i ordered the wrong voltsge
all are THT electrolytic, cleaned all pads, all traces and pads look good
i used leaded rosin solder and cleaned the pads
the only thing i can think of is that some of the leads stick out from the pads a bit but they dont touch anything
all caps are the right type
i will re-flow sometime after class tomorrow
.
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Posted by: MrFahrenheit on 2020-08-19 13:46:11
If you can, take a good clear photo of the board and post it here.
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Posted by: maceffects on 2020-08-19 14:07:27
A complete guess: maybe with good capacitors on the logic board it is drawing more power from the power supply as it should. These power supplies (mainly TDK) are so bad that I’d say it’s more likely a power supply issue. Even if it’s not, it should be recapped.
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Posted by: Mr SN on 2020-08-19 22:11:20
These power supplies (mainly TDK) are so bad that I’d say it’s more likely a power supply issue. Every LC I have seen (from LC 1 to LC 3) has needed the PSU recapped. This "feels" like a PSU capacitor problem.
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Posted by: techknight on 2020-09-16 21:31:45
yea the Power Supplies are a known trouble point in the LC series. I havent seen one yet that I havent had to recap.
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