i’ve a illuminated waterfall image with sound that simply worked for around 2-3 months. I’ve sound however no light advancement me to trust the bulb is burnt.The simply markings on the bulb is 32RR and 6400K and next some chinese writing.It has a 4-tack configuration. How do I more . . .

I have a lighted waterfall picture with sound that only worked for about 2-3 months. I have sound but no light leading me to believe the bulb is burnt.The only markings on the bulb is 32RR and 6400K and then some chinese writing.It has a 4-pin configuration. How do I measure the diameter ( more . . .