Cant seem to locate on web or buy the schematic for my Beta 87 its actually a LX2 Radio system but the part that needs fixing is the capsule amp.
The mic head got ripped off sadly I have reconstructed it as best I can.....but
The capsule has 2 legs one is soldered directly to the board the other pokes thru a hole in the board doesnt even touch the board so something must have connected to it ?.....nearbly there seems to be 2 solder blobs on the board....intrueging...
I wondered if a FET transtor connected the three points....I have a wired Beta 87 ,I had a peak inside & there seems to be a transistor connected directly to one leg of the capsule via its middle leg {base ?? is it ?}again not touching the board at all{Is this to do with hi impeadance?} the other 2 legs of the transistor are on the board.
The transistor in the wired Beta 87 has 156K70 on it, anyone no what this is & if I can get one somewhere ??
Im told I cant buy the tiny amp board as spare part or transistor & would have to buy the complete 87 head for 270 pounds a lot of money for the sake of tiny amp..if I cant fix amp im wondering if I can build my own tiny pre amp instead, I remember seeing really simple 1 transistor design here from a neuman mic.. dont no if this is feasable
The mic head got ripped off sadly I have reconstructed it as best I can.....but
The capsule has 2 legs one is soldered directly to the board the other pokes thru a hole in the board doesnt even touch the board so something must have connected to it ?.....nearbly there seems to be 2 solder blobs on the board....intrueging...
I wondered if a FET transtor connected the three points....I have a wired Beta 87 ,I had a peak inside & there seems to be a transistor connected directly to one leg of the capsule via its middle leg {base ?? is it ?}again not touching the board at all{Is this to do with hi impeadance?} the other 2 legs of the transistor are on the board.
The transistor in the wired Beta 87 has 156K70 on it, anyone no what this is & if I can get one somewhere ??
Im told I cant buy the tiny amp board as spare part or transistor & would have to buy the complete 87 head for 270 pounds a lot of money for the sake of tiny amp..if I cant fix amp im wondering if I can build my own tiny pre amp instead, I remember seeing really simple 1 transistor design here from a neuman mic.. dont no if this is feasable