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Seiko 0634-5019 can't set time or date

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coconutman351

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Seiko 0634-5019 can't set time or date

Post10 Mar 2019, 08:12

My Seiko vintage chronograph model number 0634-5019 unfortunately was damaged by a battery leak. I cleaned as much as I could and managed to revive the watch. The only issue is I have a couple of lingering issues. When I try to set time the left button to advance the digit value not only advances the value by one but it automatically moves on to the next display digits thus making time setting next to impossible. My light function also behaves strange, when pressing the button to activate the light it continues to stay on. As part of the cleaning process I took apart the entire display system to make sure non of the residual acid was present. I'm wondering if perhaps the gold pins that contact the LCD display panel may have been misaligned in the cleaning process thus impacting the function keys. Anyone had this similar behavior with their watch?
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Adam

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Re: Seiko 0634-5019 can't set time or date

Post10 Mar 2019, 12:16

Check the tech guides and make sure you have put the button lever in the right way round, its possible its sticking. If you are missing any digits you very carefully have to raise the low prong corresponding to that digit.


regards

Adam
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coconutman351

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Re: Seiko 0634-5019 can't set time or date

Post10 Mar 2019, 20:26

Thanks Adam, I did check the manual that shows and expanded view of how the display module is put together, and the setting lever is installed correctly. All my LCD segments are good and functional and I did verify that the gold chip pins that are contacting the LCD display are at the proper height as recommended by the manual. I'm just hoping that somehow it's not shorted internally below the battery holder board as they are all riveted together. It does behave as though the left function button is somehow interacting with the other function button. Sometimes when I reassemble the LCD display my display light functions normally, sometimes when I reassemble it again my LCD display light stays on after letting the button go. I'm hoping the chip logic has not been damaged. I also had to order a new setting lever as the piece that secures the crown broke. I managed to find one on ebay so it's on its way now all the way from Italy. Overall the watch is functioning normally and keeps good time, it's just a challenge to set the time. Maybe I should consider getting a new battery cell just in case the lower voltage may be affecting the watch performance. Thanks again for your suggestions and I welcome any other suggestions, I'll keep you updated!
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coconutman351

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Re: Seiko 0634-5019 can't set time or date

Post17 Mar 2019, 21:01

Update to the fix. I managed to clean the module as much as I could and aligned the display to the gold pin contacts. I'm assuming back then Seiko didn't have the conductive rubber strip to connect the LCD panels to the logic board, thus they used gold plated pins that allow the spring tension to keep the display in contact with the logic board. I also managed to find a replacement setting lever on eBay from a seller in Italy searching on part number 838 649 and amazingly I found this seller! Without this part the crown would pop out and be lost forever, so I decided to find a replacement before reassembling it. I'm now able to set the time, although not 100% back to factory specifications I'm at least able to set the time and use this watch. Thanks all for your assistance, one more 0634 restored and working!
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