Bally Display help

[RichS]

Hi All

I have been sent a Bally AS-2518-21 Display needing repair . (Apparently the last 2 digits are not working). Looking at the board R1, R2, & R3 are cooked. The schematic does not show the values. Can anyone enlighten me?

Thank you in advance

 

[AlanJ]

they are marked on for only one segment - see Q6 on diagram above. R1,R3,R5 etc are 100k and R2,R4,R6 etc are 2.2k

 

[Paul]

do you have a pic of the cooked resistors???

 

[stevebm1]

missing digits can be caused by blown transistors as well,or if your really unlucky a bad glass

 

[Paul]

100k.....???

Bally / Stern 6 digit display driver preventive maintenance | Tech: Early solid state | Pinside.com

| Forum Topic by tmuir

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[RichS]

View attachment 254712
they are marked on for only one segment - see Q6 on diagram above. R1,R3,R5 etc are 100k and R2,R4,R6 etc are 2.2k

thank you.