When I push the set/recall button on my watch the screen goes blank. I have just changed the battery.

Clear sign for a battery replacement as soon as possible.

SETTING

1. First, find the regular time mode by pressing the MODE button until the time (with the date at the top) shows.
2. Press & hold the SET button until the word ENTER disappears and is replaced by the word TIME. Release that button. You'll notice that at the top of the display, the words SET T1 or SET - T2. This is where you select between setting the 1st time zone or the 2nd time zone. Select between T1 or T2 by pressing the RECALL button or the STOP/RESET button.
3. Press either the MODE or the START/SPLIT button. You'll notice that whatever is blinking is what you can change. You can make the changes by pressing either the RECALL or the STOP/RESET button. You can change the Seconds, the Hours, the Minutes, the Month, the Date, the Year, and choose between 12 hour (civilian) or 24 hour (military) time. If you keep MODE or START/SPLIT button, you will go through all the things you can change and start again at the beginning. The START/SPLIT button goes through these things forward, and the MODE goes through the backwards, so if you pass something and want to back up, just switch buttons. In the same way, the RECALL changes things by making them larger, and STOP/RESET changes them by making them smaller, so if you accidentally pass the number you're trying to set it to, just switch to the other button and go back.

EXAMPLE OF SETTING THE WATCH Suppose you want to set the hours and the date in the 2nd Time Zone. (Just as an example, but setting any other time or date settings would be the same.)

1. Press the lower left button on the side (MODE) until you see the date & time.
2. Press & hold the lower right button on the side (SET) until the word TIME appears on the display, then release it.
3. If SET T1 is showing, then press & release the upper right button on the side (RECALL) to change it to T2 (because we're wanting to set the 2nd Time Zone we'd leave this unchanged if we wanted to set the 1st time zone, T1.)
4. Press & release the lower right button on the face (START/SPLIT) twice, skipping the seconds. You should see the hours flashing.
5. Press & release the upper right button on the side (RECALL) repeatedly until you have the hours position set to what you want it to be. If you pass the hour you want, go to the lower left button on the face (STOP/RESET) and press & release it to back up.
6. Press & release the lower right button on the face (START/SPLIT) three times, skipping minutes and months, so that the date begins flashing. Press the RECALL button until you have the date you want. (You can go backwards by pressing the STOP/RESET.)
7. When you're done, and you've set everything you want to, press & release the SET button once to tell the watch you're through setting and to lock those settings in.

you have to change the battery of your watch. the battery is low powered that why it does not light up and it goes blank. i hope i had been helped you.

Some watches have a "reset" button or combination of buttons that must be pushed to clear all the electronic registries on the watch's little computer after you replace the battery. You might try taking off the watch back and seeing if your watch has this requirement. Even then, it's not always a perfect solution. Last week, I replaced the battery in a watch that had been dead for some time. The watch appeared to come alive again when I put the new battery in, but when I pushed the reset pin (on this movement, it was on the watch movement itself, next to the battery), the entire watch went dead. Nothing I did would wake it up. I removed the battery, waited 30 seconds, then re-inserted the battery. Problem solved; the watch powered up, and I was able to set the time and access all functions again.
On some digital watches from the 1980s, after replacing the batteries, you were supposed to push and hold all the external buttons for a few seconds to reset the watch. I don't think manufacturers still make watches that respond to this, but it is easier to try than taking off the back and re-installing the battery.

From your description the solar cell charges the battery and keeps it topped up. I think the rechargeable battery is the problem because when the screen goes blank the battery level drops to low and the LCD blanks out which would explain the intermittent operation of the watch. I think it is worth getting it checked out with an estimate.

Whenever you push the "indiglo" button and your display goes blank, your battery is almost dead. Get it replaced.

Unscrew the crown and pull out halfway. Use the stopwatch buttons to advance the hand to where you want it. Then push the crown back in and screw it down. You may need to pull the crown out all the way--I cannot recall which setting controls the minute hand and which the hour hand on the stopwatch function. This has to be done every time the battery is changed.

This sounds like a simple battery replacement. Depending on how low the battery is usually pressing the light button and the display goes dim or blank is a good indicator of this. Takes a CR1616 battery and be careful of the spring inside and make sure the seal is in the correct position. You will need to touch the AC button and the back of the battery with a pair tweezers for a couple of seconds to reset the watch. Put the case back on and set the watch thru the functions.

i think the battery is low voltage,try to change the battery 1

I put a new CR2025 battery in my T5e671 Timex and it solved the problem.
The screen no longer goes blank at any time.
PS:Timex manual says "remove battery strap" to replace the battery.
But it doesn't say HOW.-& I couldn't google an answer to that.
Here is how:
The metal strap goes across the middle of the battery and then goes over the edge of it on both sides.
At both edges the metal strap goes over a nylon tab.
One of those nylon tabs is notched, if you put the end of a paperclip in the notch, you can release the metal strap edge that runs under it.