FunHouse
Williams, 1990You're currently viewing posts by Pinsider provato.
Click here to go back to viewing the entire thread.
Quoted from kcZ:I got the start button light to work. It was the wire on the J135 connector not seated very well.
That is the reason I check every single connector pin with my multimeter for continuity before I install any PCB 
Same applies to all cables, sockets, fuses, bulbs, micro switches and diodes. If you make a habit to check all these with the multimeter at restoration, you avoid a ton of problems later.
Quoted from LitzDoc:I am new to the Multimeter. Could you please tell me how to check the pins with the meter? I guess you put the red multimeter probe in the molex pin then where do you place the black probe to look for continuity? Thanks very much.
1.Put the multimeter in "diode mode" (or continuity mode). This option usually has a diode symbol ->| and maybe a sound symbol ( because it beeps when continuity is true)
2. Put one of the probe on the molex pin edge (red or black doesn't matter) and the other probe on the next station of the circuitry on the PCB that is connected to the molex pin. If it beeps/lights you have continuity. If the multimeter shows nothing, then check the solder connection of the pin (it might be cracked and will need desolder and re-solder
3.when you check a diode, you must have either a voltage drop across its legs (about 0,25 shows on your multimeter) or zero. This depends on which diode leg you put the red and the black probe. If it beeps or of it shows zero both ways, the diode is bad.
You're currently viewing posts by Pinsider provato.
Click here to go back to viewing the entire thread.
Wanna join the discussion? Please sign in to reply to this topic.
Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
This page was printed from https://pinside.com/pinball/forum/topic/couple-fh-problems?tu=provato and we tried optimising it for printing. Some page elements may have been deliberately hidden.
Scan the QR code on the left to jump to the URL this document was printed from.
Τρίκαλα
Haledon, NJ