What is wrong with my Remington sp-29 razor. It will not take a charge

First check the fuse.

You have a break on the razor side of the charge base. Most likely a cracked solder. . But it could also be a worn plug... any case pushing on it will only increase the problem

remington SP390 replacment blades and screen foil for remington f5790 heads replacement parts.

remington SP390 replacement screen foil and cutter blades for remington f5790 replacement parts.

You will find at shaveroutlet.com. See link below

http://shaveroutlet.com/catalogsearch/result/?q=ms-5100+frame&submit=

Many corded razors have a 110 cord that will fit. The Zx4 has a keyed receptacle. Depending on the cord you find (I used a Remington), you may have to whittle off the tang on the inside of the Zx4 power port. My Zx4 seems to be sensitive to polarity, it will not charge if the cord is plugged in backward. So when you get it to charge, mark the Zx4 case & new cord so you know which way to plug it in every time.

remington SP-96 replacement heads for electric razor remington ms5100 blades replacement parts.

I suggest that you use Remington pre-shave stick. It helps with this problem. It can be purchased at shaveroutlet.com. See link below

http://shaveroutlet.com/remington-sp5-face-saver-powder-stick-p-194.html

I have a Remington electric razor fully charged and it won;t shut off unless I plug it iin. When I remove the plug in cord it runs all the time?

I have the same razor. If it has been sitting too long the internal nicad batteries may not accept a charge and this razor does require the internal battery to not be totaly dead even using with the power cord. Try leaving the unit plugged in for a week or so and see if it "wakes" up. It it is supposed to automatically charge when plugged in (leave the switch in the "off" position). Mine did eventually wake up and I got another few months useage out of it. The internal two cell nicad batteries are soldered to the circuit board inside and are NOT easy to replace. I happen to like the design of this razor to prevent ingrown hairs and Remington does not seem to have anything like it for sale anymore. This model has been discontinued as well as replacement blades.