Electronics > Repair
Hioki 3532-50 LCR Repair (One major problem solved, SM still wanted)
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KungFuJosh:
R5 at 5.1k is definitely better.

Now I should go to bed 2 hours ago. 😬

coromonadalix:
the best results so far
TERRA Operative:
You almost need a breakout board like a mini 'mixing desk' of trimpots to tweak and dial them in to get it perfect, then substitute with the closest fixed values. :-DD
coromonadalix:
loll yep  had the same toughts ....   but i would say somewhat usable like this ...  depends of the OP  loll

seems a bit weak in the lower corners ?

@KungFu   can you show us the  chip markings for the row and column drivers ?  u9 u10 u11 too ?
KungFuJosh:

--- Quote from: coromonadalix on August 28, 2024, 12:52:08 pm ---loll yep  had the same toughts ....   but i would say somewhat usable like this ...  depends of the OP  loll

seems a bit weak in the lower corners ?

@KungFu   can you show us the  chip markings for the row and column drivers ?  u9 u10 u11 too ?

--- End quote ---

A pot doesn't work in every position. R1 was okay, R6 did nothing, and I think R5 hated not being a fixed value for some reason. 🤷

I definitely think it's easily usable now, but I might try 5.6k in R5 as R5 seems to directly affect those corners. My only concern is that it might cause some more ghosting. I also think it looks better in person than in the photos.

In reply #110 above, there's a high resolution attachment you should be able to view the chip markings on (the one with the -min suffix).

Thanks,
Josh
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