4-channel radio control unit: what is the 18-pin IC, UL1958?

welcome

what IC could be sitting in this controller ?? it is a ukaład with 18 legs . Unfortunately in all versions there is no inscription on these chips . The controller refused to work, so it does not respond at all, i.e. 4-channel radio
bought on allegro .

it may be an integrated circuit UL1958 ????

UL 1958 is a no longer manufactured circuit for switching channels in RTV equipment.

As 18 pins, you can guess that it is something from a PIC. E.g. PIC 16f84. Definitely a microcontroller of some kind.

thanks , maybe it will somehow fit !!!

another piece of information, underneath this IC there is the inscription " MIBEEG1448 " maybe there is something to be found out from this inscription.

Finding a chip will not get you anywhere. In order for a microcontroller to perform the functions you expect of it, you must first program it. They come out of the factory "clean".

i was just thinking about that too , so all that remains is to buy a new one . thanks for the information .

since the controller has no response it could be e.g. the ceramic resonator - orange cylinder ????

Hard to tell without any measurements. There could also be a defective remote control.

the remote controls are definitely not , they work fine . to be honest i didn't even have time to enjoy it because the controller was to be connected to the gate control unit . So I just plugged it in at 24 volts to see how it works and after two minutes it was gone hehe

Well, that's all clear. You should have written right away. This receiver has a 12V supply! (Even on the relays you have it written that the coil is 12V). The stabiliser is probably fried.

Give a close-up photo of the board, and a wiring diagram.

A gate controller is usually powered by 24V AC !

TvWidget wrote:

The gate controller usually runs on 24V AC !

And where did the colleague read this? In the dozen or so that I have wired and repaired there was 24VDC output. To get to AC you have to combine. It does not change the fact that the author of the topic stoned the 78l05 stabilizer on the board, giving too high power supply. If AC had been there, chips would have been left of the electrolytic capacitors after a few minutes.

i replaced the 78l05 stabiliser on the board , I also replaced the ceramic resonator , I replaced all the transistors and a few resistors and it still doesn't work .
It is likely that the integrated circuit - microcontroller with 18 legs - is dead. ok I can close the topic because it is no longer anything to save it ,

Added after 3 [minutes]:

arturavs wrote:

Well, that's all clear. You should have written right away. This receiver has a 12V supply! (Even on the relays you have it written that the coil is 12V). The stabiliser is probably fried.

Give a close-up photo of the board, and a wiring diagram.

the controller is powered by 24v , the writing on the relays is 24V 30A

Added after 47 [minutes]:

oh i forgot to add thank you for your help . today i will buy a new controller i will be more careful now , i will put the stabilisation on the control unit and i think it will be fine

You provide pictures inadequate to the state of your possession. The topic should not exist at all. You should post pictures of the controller you own, not some downloaded from the internet.

Good luck in your battle with this thing!

Added after 2 [minutes]:

You are giving Fellow pictures that are not appropriate to the condition of the property. The topic should not be there at all. You should insert pictures of the controller you own, not some downloaded from the internet.

Good luck in your battle with this thing!

i am closing the topic. I bought a new one
however, the chip is gone so it's not worth it. thanks to all