tm9100 vertical channels are missing

[realdeal1966]

after an electrical fault both tm1500 and tm9100 were not able to get the vertical channels. i've since changed the lm317 next to the tuner for tm1500 and the channels are ok. regarding tm9100 , tm1500 solution is not applicable, cos next to the tm9100 tuner is smd ax1117d 5.0e1 etc . any help will be appreciated. thanks

 

[Ferret]

This may seem very basic mate but as 2 receivers have the same issue!

Have you swapped out the LNB?

Ferret

 

[manic01]

As stated by ferret a loss of vertical only or horizontal only channels is normally a LNB issue.

 

[realdeal1966]

i 've done so, and tm1500 is working after changing lm317 regulator. in the case of tm9100 situation is different, cos there 're smd ge 317, npn b772-y, pnp d882-y and az1117d 5.0e1 surrounding the tuner. i don't which one is to tm9100 as lm317 is to tm1500.