Grundig tv 40 vle 4322 bf - Western Digital TV HD Media Player USB Drive Case

Those 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.
https://homenol.blogspot.com/
https://elektrotricks.blogspot.com/
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. If blinks continue without any pause, the main board is faulty. Search the sites by type in the brand name of your set, in its search box at the right column. View it on a desktop or in web View by mobile. Mobile view has no search box.
Counting of number of blinks to Philips TVs is entirely different to that of other brand TVs. It is not a direct count procedure. The site have details about how to count the number of LED blinks [Fault Codes] to Philips brand TVs are given; along with details of the faulty circuit location...

Remote Control Codes For Grundig TVs

Grundig 3 Digit TV Remote Codes
113
110
128
Grundig 4 Digit TV Remote Codes
0195
0160
0161
0171
0310
0320
1144
1124
1131
Grundig multi-brand remote codes instructions for TV's.
1 - Turn on TV.
2 - Press and hold the TV key and enter the codes for your brand.
3 - If your TV turned off then you entered the right code and setup is complete. repeat with next code if needed.

Problem on switch digital, maybe on diode or integrated circuit

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/

In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.

Try 0345 563 582 515 098 584 219 104 233 223 065 471
Grundig
FT70-700 822DOOFA MW82- 500IRDT ST63725 ST63755 TF55-302 GT210S. MW822699 CVC2030ST ST70-875
563
Grundig
T70-1021, T70-1022
065
Grundig
MW82701 ST55/730 MW70/2700
582
Grundig
GT1401
515
Grundig
T55-1120 T55-1020 WF703020
471
Grundig
32WF100 W82-2030
584

If the TV is a multisystem compactable one, it will work. The color system in US is NTSC Gopakumar Gopalan Google

TV Grunding 49 VLE 6523 BL reset PIN

Swich off tv from main swicher. Press i on remote control and hold it. Swicn on the tv from main swicher. On the screen should appear a service menu. Under decoder level with volume button from remote change from off to on. The same is with hotel mode for volume control. Exit the service menu by presing i on remote control and have a nice day!