[Mike1981]

Hey all,

I'm new to the forum and hope I found the right subforum to post my question. If not, please feel free to move it to the correct place.

I tried the search function as well, but couldnt find anything.

I own a 1st generation Citizen Navihawk Blue Angles watch. Its been sitting in my basement for the better part of the past 6 years or so. I recently found it and decided to check it out .. see if its still working.

Obviously I had to replace the battery, who knows how long it had been dead. After replacing the battery and resetting it, it seems like the digital display is not working properly anymore. I follow the manual, set the dial to TME, pull out the button and hold A, B, and C for two seconds. Afterwards I can realign the hands (not sure what the english terminology is). But I basically have to do it in "the blind" since the display is not working anymore. The watch itself seems to work normally, keeps time and all.

If I tilt the watch and look at the display from an angle, I can actually see the display displaying all crystals after pushing A,B, and C. But it seems to be very weak. When I exit the alignment mode, I cant see anything on the display, no matter what angle.

Does anyone have any idea on what might be the problem? I hope I explained my problem properly, English isnt my native language. Please ask if something is not clear.

Best regards,

Michael

 

[Mike1981]

Hey,

thanks for the quick reply. I will have to see if I can get some polarized sunglasses from somewhere. I only own non-polarized ones.

Do you know by chance how many volts it needs to get? I replaced the battery with the same model that was in it before, #399 which gives 1,55V I believe.

Best regards,

Michael

 

[Mike1981]

Details from the back are as follows:

C300-Q00869 TA GN-4-5 JAPAN 970997 WATER RESISTANT 10BAR CITIZEN WATCH CO. STAINLESS

Hope that helps.

 

[Mike1981]

Hey all

Thank you for all the replys!! Sorry for not getting back to you all sooner.

I appreciate the time you are all taking to help me.

I checked the new battery with a meter today and its showing 1,56V. So its all good from that side it seems.

There is no evidence of a battery leak. I can't see any leakage when I open the watch and the old battery seems to be fully intact (except for the fact that its empty ).

I did check out the C300 technical manual that was linked. Judging from the front face my watch seems to be more similar to the C320. But when I compare both the technical manuals, it looks like the inside of both watches is the same.

I tried to disassemble the watch further, but I've run into a problem. I open up the watch, take out the battery strap, the battery, and the buzzer contact spring. Thats about the furthest I get. I'm able to remove button B from the case, but that doesnt seem to help much. There is a white circular plastic ring around the inner works, which looks like the LC display panel supporter from the manual, but its inserted from the lower end of the watch! I'm unable to remove the circuit board supporter due to this white circular supporter. To be more specific, I can get the white circular thing out about 90%, but the rest is stuck on the Mode M button. No idea how to remove that button or if its even allowed to remove it. To see what white circular thing I'm talking about have a look at the youtube video with the title "Citizen Skyhawk C651 Problem Fixed" by hl chang. You can see it at minute 3:15. Unfortunately I cant link the video as my post count is still too low.

I also seem to be unable to remove the entire center piece/module from the casing, as is seen in Sir Alans pictures. Again, the Mode button seems to be in the way.

Any advise or ideas? :/

Best regards,

Michael

 

[Mike1981]

Hey Alan,

thanks again for the reply. Your posts are truely excellent!

I can't open the watch right now, I'm on the road. I will as soon as I get back home. I will have a general look around and see if I can find anything, such as leakage, anything being physically broken or so. I dont mind fiddleing around a bit, I think I'm quite handy, though I have to admit this is the first time opening a watch.

I do have one more question though. Is there anything I can do if I dont actually find anything physically broken or such? Is there some way to test the LCD for example? Would it make sense to somehow measure the circuit board, measure voltage, resistance, continuity? And if so, how?

Thanks!


Michael

 

[Mike1981]

Hey all.

Thanks again for all the replys.

I'm still on the road and won't be back home until next week. I will give it another go then and post an update here.

You all have a good coming weekend!


Michael