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+--- Thread: AC or DC - New power supply and pcb (/thread-5012.html)
- Home - 01-28-2019
I have been supplied with an SEM01 along with a new 15VDC switch mode power supply (separate purchases !).
Upon booting up i found it did not work. I received a replacement from CBUS shop that did not work!
Upon closer inspection the SEM pcb has \"DC15V\" imprinted on the pcb. DC being polarity sensitive it also has \"+ve and -ve\".
It appears that the output of the transformer was wired the wrong way around on the transformer lead.
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I am assuming that the new switch mode power supply 15V DC output will replace in its entirety the old 14VAC transformer.
Although the new switch mode power supply is ( I believe) backward compatible. The old transformer will NOT then feed the new DC15V pcb ( as it is 14V AC output ).
CAN SOME ONE PLEASE CONFIRM IF THE NEW CPU WILL EVENTUALLY USE THE SAME DC15V CIRCUIT AS THE NEW SEM - IF SO THEN ANY C1 UPGRADE WILL REQUIRE NEW SWITCH MODE POWER SUPPLY TO BE FITTED.
- slychiu - 01-29-2019
Can we have the serial numbers of the SEM01 so that we can investigate?
- slychiu - 01-29-2019
We are asking Laser to check their Slave stock regarding the connections
- Swiss-Toni - 01-29-2019
I have recently pourchased 2 SEM01 from Laser and are waiting to be installed, These were bought with the cabinets, please let us know asap if their is an issue with these as I am due to install one this week. I will get back to you with serial numbers later if required. The PSU is the standard one in the cabinet 14V 2.5A
- slychiu - 01-29-2019
If the transformer is the old 14V type and not the DC type then it should not be an issue. Please provide serial numbetr to confirj