can be repaired  for about 100rm .
possible the coils  degrade . 

mean while do get  a  surge protector .  lightning surges  can degrade  these components.

the main functions are different 

surge protector  suppress  the lightning surge on the power  line from about 50kV  to  2kV .

voltage regulator main function is to keep maintain  the voltage within its specs .  its may have basic surge components . their specs 
seldom/ never  reveal  the figures for surge protection.

for a TV  .  use a surge protector is  sufficient.

the TV  power circuits/board have sufficient  voltage regulation.

i will go for surge protector  cos  the aim is to suppress  the surge which is  killing  on the tv components.

best to have 

whole house protection . 
SPD type 2 
install in  DB  box
at least 40KA  .  should last 5 to 10 years.
spec Up    ..  must be below 2kV      clamp voltage

if you dont see  these specs  dont buy ...  waste your money  as you dont get the protection you want .

hager  one looks good .
if you buy china ones  buy only the  famous/branded  ones.  for quality and specs.
for  power socket protection
spd type 3
is a power strip .

check the specs ...  look for highest  surge protection  in Joules  value .
must have  LED  to show  Protected , and Earth . is ON .

if dont have LED  light .... Dont buy .
  you dont know status of the unit.  the protection  will go dead  after some  big surge hits. 
when the LED goes off ..time to buy a replacement .

recommended  APC  and  belkins .

here goes....

https://www.electrical-installation.org/enw...tage_protection
google search   

surge SPD  ,lightning  SPD  , etc..