Multimeter is working now.
So, here some tip that can help others
#1 meter was turning on, but all reading was showing OL in all functions
#2 I open it and I detected that transformer was just generating like 4-5v where it should be generating around 10V
#3 Disconnected the transformer from the board and than it was doing 10.5v, so some short circuit was in somewhere
#4 I detect that one of the 7805 was warming.
#5 I removed it and then the transformer starting generating then 10V as supposed.
#6 Testing the ground and +5v out on the board (with the 7805 removed), it showed 0ohms, so really a short after 7805
#7 here one mistake ... I looked around the 7805 and saw a few components around, so i decide to remove them ... mistake,, the board is multilayer (obvious), but i didn't noticed that on in a first look ... so after removing the components still showing 0ohms
#8 so then I discovered that there was a lot of components, so removing then was not an option
#9 so, with the 7805 removed, used an external power supply and injected 5v on that rail, looking for heating and was easy, those 2 chips I marked initially was heating, removing them remove the 0ohms reading.
#10 however, that reading was still 22ohms, what seemed to be low ...
#11 easy, use the same process with the power supply... not that easy ... this time no obvious heating and the AMP usage on the power supply was not too high ... so what to do
#12 leave it on for some minutes and noticed that the relays mainly those lite orange was warming a little
#13 so I a get a point to focus
#14 measuring the relays saw that all coils was energized at around 5v
#15 another mistake, and here is where you need be patient and understanding before starting soldering/desoldering ... i decide to remove the relays (this was a error, and that was a mistake
#16 ohms went high to 800ohms, now appears good
#17 but, why the relays was energized? I discovered that those sot23 that was connect to 0v and to the coil, was shorting the 0v rail and as the 5v rail was connect direct to the other side of the coil relay it was causing the relay been energized
#18 another big mistake ... looking on the sot23 it had a marking code 2A and a letter E turned 90 degrees ... some google and a found that was a N Channel MOS ... big, big ... big mistake
#19 replaced those sot23 and the relays continued getting 5v on all coils ... so something wrong
#20 here again think before do ... course that would happens N Channel with 0V connect to the gate and relay connect the source and the other end of relay on 5V will act as diode and will energize the coils
#21 so, what now? Thanks to Kleinstein, that called my attention that the device should be a NPN transistor ... actually at the end was PNP, because NPN would not conduct on that direction
#22 remove the N Cnannel and soldered the PNP transistor, the multimeter worked
#23 Also a notice and this is very important the relays that are lite orange are what is called SRCRS relay with 2 coils (Set and Reset), what that means? means that they should not be energized, but, just send a pulse to switch the Set or Reset
Thanks again to Kleinstein.