Serial number is 70330 not getting cold tempterature light is blinking

By blinking led it show there is some fault. By counting the blinking you can be able to identify which part or board is faulty.
If you wiah to get some more details about flat panel television repair and error codes then check the following link.
http://electro-medical.blogspot.com/

Can you provide more information on the year of your stackables and if you have the exact model or serial number, that would be helpful. Thanks.

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience. If blinks continue without any pause, the main board is faulty.

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. Viewing it in "Mosaic" or "Magazine" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience. Do a search by type in the brand name of the device to the search box.

Normal for a freezer is around 0 Fahrenheit. 21 is barely cold enough, but ok, food will stay frozen. Freezing is 32 Fahrenheit, 0 Celcius.

These blinks are fault indication, and known as blinking codes. From the number of blinks occur at one time switch ON; you can get an idea about the faulty circuit stage inside the TV. This will make repair easy. For more information, check the link http://electronicshelponline.blogspot.com/

Sounds like the control board or panel is shot. What is the model number of the unit, and serial number?

O'Neil MF8i Infrared Printer Green light blinking problem,
Solution: There are two types of green light blinking problem slow and fast blinking so in case of slow blinking you should change the IC-LT1776 part location number on the board U14 and if the light fast blinking then need to change the part number U20 on the board.
Note: U20 Can be replace with working one only if you buy new one that will not work because its programmed by the manufacturer and normally U20 become faulty and U14 & U20 location numbers are for the old version board. With the new version board the ICs will be the same but the location number will be different.

Ice maker does'nt work

It is called mainboard and is the one where you plug your video (HDMI,component) cables if you want to order a new one you need your product code, it is located in the back of the TV, same place as the serial number.