I gave Marinebeam the data on my present incandescent bulbs.
Marinebeam said their model WG-BP-10-WW bulbs are their LED replacements for them.
Based on that, I ordered two.
They did not fit in the lamp socket. The base of the LED is different than the base of the incandescent (See below my engineering analysis that I gave to Marinebeam).
I refused to accept the LEDs since they were not replacements and Marinebeam told me to return them. I did and they acknowledged receiving them.
Thus, Marinebeam made an error (which wasted a lot of my time).
In addition, after they received the items, they did not issue a credit to my credit card. After two weeks, I finally contacted them and asked when they will issue the credit. Only then, after I pressed them, did they issue a partial credit; they retained some of my money for the shipping cost that was incurred due to their error.
Also, they are not reimbursing me for the costs I incurred shipping the items back to them because of their error (Since they chose not to issue a call tag, I had to incur cost in time and money to drive to the next town, the closest post office, to pay to ship it back and get a proof of mailing.)
It appears to me that they do not treat customers in a fair and reasonable way.
Allan Frey
--------
Engineering analysis
I used a fractional scale vernier caliper to make the measurements (I was a GE engineer).
In the metric terms that Marinebeam uses, the lamp socket is 9.5 mm. The spring holder/contacts assembly in it, I photographed and sent to them. The wedge base bulb spreads the spring holder during insertion and, when fully in, it grips the bulb. This makes sense since the spreading of the spring holder from its rest position of about a 1 mm gap to a 2.4 mm gap provides the tension to hold the wedge base bulb in the holder.
The plastic of the Marinebeam LED assembly is 9.5 mm wide and 2.4 mm thick with the bottom squared off where it inserts into the holder.
The incandescent bulb is 9.5 mm wide and 2.4 mm thick where the holder grips it when it is fully seated in the socket, just as in the LED. But the bottom of the incandescent bulb, where it first inserts into the spring holder, is quite different from the LED. The four edges of the bottom are chamfered. In this way, the narrower bottom of the bulb, about 1 mm, readily slips into the spring holder and then spreads it as the bulb is pushed in. When fully inserted, the spring holder securely grips the wedge near the top where it is 2.4 mm thick.
It appears that the LED is stopped by the spring holder, because the lack of a chamfer does not allow the LED to slip into the spring holder to start the wedge action.
I also inserted a screwdriver, twisted it and the spring holder is flexible and moves easily.
Marinebeam said their model WG-BP-10-WW bulbs are their LED replacements for them.
Based on that, I ordered two.
They did not fit in the lamp socket. The base of the LED is different than the base of the incandescent (See below my engineering analysis that I gave to Marinebeam).
I refused to accept the LEDs since they were not replacements and Marinebeam told me to return them. I did and they acknowledged receiving them.
Thus, Marinebeam made an error (which wasted a lot of my time).
In addition, after they received the items, they did not issue a credit to my credit card. After two weeks, I finally contacted them and asked when they will issue the credit. Only then, after I pressed them, did they issue a partial credit; they retained some of my money for the shipping cost that was incurred due to their error.
Also, they are not reimbursing me for the costs I incurred shipping the items back to them because of their error (Since they chose not to issue a call tag, I had to incur cost in time and money to drive to the next town, the closest post office, to pay to ship it back and get a proof of mailing.)
It appears to me that they do not treat customers in a fair and reasonable way.
Allan Frey
--------
Engineering analysis
I used a fractional scale vernier caliper to make the measurements (I was a GE engineer).
In the metric terms that Marinebeam uses, the lamp socket is 9.5 mm. The spring holder/contacts assembly in it, I photographed and sent to them. The wedge base bulb spreads the spring holder during insertion and, when fully in, it grips the bulb. This makes sense since the spreading of the spring holder from its rest position of about a 1 mm gap to a 2.4 mm gap provides the tension to hold the wedge base bulb in the holder.
The plastic of the Marinebeam LED assembly is 9.5 mm wide and 2.4 mm thick with the bottom squared off where it inserts into the holder.
The incandescent bulb is 9.5 mm wide and 2.4 mm thick where the holder grips it when it is fully seated in the socket, just as in the LED. But the bottom of the incandescent bulb, where it first inserts into the spring holder, is quite different from the LED. The four edges of the bottom are chamfered. In this way, the narrower bottom of the bulb, about 1 mm, readily slips into the spring holder and then spreads it as the bulb is pushed in. When fully inserted, the spring holder securely grips the wedge near the top where it is 2.4 mm thick.
It appears that the LED is stopped by the spring holder, because the lack of a chamfer does not allow the LED to slip into the spring holder to start the wedge action.
I also inserted a screwdriver, twisted it and the spring holder is flexible and moves easily.
