Gemini gpa-3000 sound amplifier, fuse damage
THE MAIN IS BURNED, THE TWO INTERNES ARE WELL, I BELIEVE THAT IT SHOULD BE THE TRANSFORMER THAT IS RECALLED BECAUSE I DISCONNECT IT FROM THE CARD AND PLACE A BULB IN SERIES, JUST PASS THE SWITCH ON THE AMPLIFIER ON THE BULB.
Hello friend, the series that is using the bulb is lit with maximum brightness or a fairly dim brightness, the bulb is recommended to be 200W.
What voltages does the transformer supply and if it overheats?
You mentioned that the two fuses on the driver board are damaged, if so it is a clear indication that there are damaged transistors that can be the deriver or power transistors.
The fuses inside are fine, only the outside one is damaged and a 100w bulb is placed and the brightness is strong. The voltage delivered is 20v + 20v but I did it because I connected it directly to the electricity is so much so that the electricity of the house became opaque, blo put only for five seconds .. For me that transformer is overheated
Remove the power from the transformer to the card and perform the test only on the transformer ... Now the client told me that there were two power drops and a rise in his house and from there he started to burn the fuse ...
friend. that's why check what I indicated and also check the transformer although those transformers almost do not get short but check it
Messrs., I tell you the transformer is damaged, it is overheated in the primary barely with 10 sec fed it got hot and began to smell like burnt without connecting the card, that is, in a nutshell the primary is bad since the secondary gives the voltage of 35 vac
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