[DAHASCO]

Have had a 7549-7010 Tuna for a while in the drawer, I picked it up today and it was not running. OK, I replaced the battery and NOTHING ??? Is there a reset on the circuit board ? What am I missing ? Any and all help will be appreciated. I would rather sell the Tuna than pay for the repair. I never wear it. Have had it for 25 years. HELP PLEASE !!!

 

[TheTigerUK]

Hi is this the reset pin you are looking for ?

 

[rileynp]

Hi is this the reset pin you are looking for ?


[/quote]

That reset pin is not used when changing the cell, it is actually a post that the hacking lever makes contact with when the crown is pulled out to cut the flow of electricity through the circuit. Touching it is not required when replacing the cell. I believe DAHASCO is referring to an A/C type of contact, which is normally only found in digital-type watches to All Clear the circuit. The 7549 does not have (or need) such an A/C contact.

 

[TheTigerUK]

Thanks Noah, i know when i changed the battery in mine i dident have to reset anything.

Does the 7549 have a regulator ? I wondered if the screw head near to the right hand battery clamp screw was one.

 

[rileynp]

Does the 7549 have a regulator ? I wondered if the screw head near to the right hand battery clamp screw was one.

Yes, that is the trimmer condenser, which when rotated will change the rate of the watch. I cannot imagine doing so without access to a timing machine, as smallest amount of rotation can have drastic effects on the rate.
For those interested:

 

[DAHASCO]

The battery contacts are clean and the coil looks perfect under magnification. I only had to take out 1 screw nearest the crown to change the battery. Did not touch anything else.

 

[Pei Der Han]

If the old battery hadn't leaked or left any blue-green crystals around then it is most likely the oils in the mechanism have dried and it simply needs a service.

 

[DAHASCO]

Well, I may post in the Buy/Sell/Trade !!! I'll probably have severe remorse :'( I haven't decided :-[ A Marine Master would be nice 8)

 

[mmounce]

Check voltage on the "new" battery before you installed it?

 

[DAHASCO]

Check voltage on the "new" battery before you installed it?

Yes, And the new battery was perfect. I also checked the old battery and it was dead. Energizer 386

 

[marks]

for the past 3 years I've done nothing but dream of getting a tuna, now i've saved almost all the money buy selling off a few watches, my grail is gone. had to take my bass boat in and its $600.00 for repairs... :'(

 

[Svand]

DAHASCO DAHASCO did you have a look at Harry's blog ? He saved a Tuna that died on him ! Have a look here

http://vintageseikoblog.blogspot.com/2010/04/seiko-tuna-300m-7549-7010-disaster.html

 

[bry1975]

$600 for repairs are you sending the tuna to Rolex or something? :-\

 

[TheTigerUK]

$600 for repairs are you sending the tuna to Rolex or something? :-\

I think Mark means the boat is going in for repair ) )

 

[bry1975]

I would think £45 $70 would be enough to get the movement ticking.

Some of the new quartz testers are supposedly very good not that i'm a quartz expert.

Regs

Bry