UTCOMP Pro does not work anymore

[ArT]

@BenNSR What issues do you have exactly and when did it happen? Please describe your issues in details.
Does UTCOMP is recognized in UTCOMP windows application with USB?

[BenNSR]

Hello, yes utcomp is recognised with usb, I can see Voltage, temperatures, egt and afr values.
Screen don't work, it's warm a little, buzzer and buttons don't work.

[ArT]

Buzzer should work. Please disconnect display and check buzzer and buttons (you should hear clicks). If buzzer and buttons are working, you can connect new display to your module because probably only display is damaged. But first make sure that you have not more than +5,2 on power lines (e.g. DS18B20_VCC pins). If buzzer is not working I recommend to send display and module to us for diagnostics.

[liryc]

Buzzer should work. Please disconnect display and check buzzer and buttons (you should hear clicks). If buzzer and buttons are working, you can connect new display to your module because probably only display is damaged. But first make sure that you have not more than +5,2 on power lines (e.g. DS18B20_VCC pins). If buzzer is not working I recommend to send display and module to us for diagnostics.

Hello,
i try to repair the screen of BenNSR, he give me all (screen and utcomp-pro) for few euros.

(A6) DS18B20-A_VCC (+5V OUT) is ok => 5V
(A18)DS18B20-B_VCC (+5V OUT) give me 0V
Data from USB with phone look like good. I can see voltage and other stuff.

BenNSR try with a new screen before send it to me, and i was working fin.

what can i check on the screen ?

https://youtube.com/shorts/Jh9z29DcKd4?feature=share

thank you
Bye

[ArT]

Display connector in utcomp pin1 is ground and pin 2 is VDD - this is the same voltage level as for DS18B20 sensors (about 5.0V when ignition switch is ON). If you have missing voltage on A18 and it's fine on A6 it means that internal power supply is working fine, voltage on A18 is missing from another reason (e.g. faulty resistor on this line or pullup - it should not matter for display functioning). Please check if you have +5V on display (with ignition switch ON), maybe tape is corrupted. Is it new screen? Does it have correct configuration of RS1/RS2 jumpers? Please send me a board photo of this screen.

[BenNSR]

oui j'ai un nouvel ecran !

[BenNSR]

sorry I will make a better answer in English later asap

[BenNSR]

with a new screen all is good...Thank you the utcomp is ok ! I'send for gift the old utcomp and screen to a friend. he will repare screen ore buy a new one thanks !

[liryc]

Please check if you have +5V on display (with ignition switch ON), maybe tape is corrupted.

Can you show me where i need to check the 5V on the display please ?

Is it new screen?

No, old faulty one. (but with another new screen, it's ok)

Does it have correct configuration of RS1/RS2 jumpers?

Sorry, what is RS1/RS2 jumpers ?

Please send me a board photo of this screen.

[liryc]

i have a constant 4.7V here
And i feel HOT component arround here (not sure witch one on both)