| ferreyrafede |
transistorrr?????????
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| Perry Babin |
They were likely BUZ11s but Rockford was also using IRFZ40s at that time.
An IRFZ44N or an IRFZ48 would serve as a replacement.
Also check the gate drive resistors, the driver transistors for the power supply FETs and the large Zener diodes near the FETs.
If you email Rockford tomorrow, you can get a schematic. It will have the original part numbers. |
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| ferreyrafede |
| Please I need to know that you take transistors, thanks |
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| boxcustom |
| You can remove the transistors easy. You need to obtain a large soldering iron. The high wattage type that is used to burn wood for hobbiest. Let the iron heat up to max. spool off some solder and hold it against the to-220 transistor. Put the HOT iron against the transistors metal tab. Start feeding the solder until it forms a pool on the metal tab. If the iron is hot enough you will feel a pop! The transistor will remove itself from the thermal strip. If it does not disconnect itself fast you need a larger iron. This is how Rockford repairs its amps. To remount the transistor hold the transistor down and apply solder to the top of the tab. Perfect. |
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| Perry Babin |
boxcustom:
This one doesn't use the MEHSA system.
ferreyrafede:
I didn't understand the question. |
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| boxcustom |
| Hello. Well now everyone knows how to remove transistors off of RF's thermal strips. :clown: |
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| zeonrider |
Maybe is not a transistor , maybe is a rec. diodes(dual diods in one pacage).
Regards zeoN_Rider |
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| Perry Babin |
| The rectifiers are the MUR1620CT and MUR1620CTR on the other side of the amp. |
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| ferreyrafede |
I need to know what kind of transsistor are those that I'm showing you (?). thank you for your help! I'm argentinian.
Have you got the circuit schematic ?????????
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| ferreyrafede |
remplacement 1ami and 2ai transistor rockford
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| Perry Babin |
1A = MMBT3904 - I generally use an MMBTA06 as the replacement.
2A = MMBT3906 - I generally use an MMBTA56 as the replacement.
The A06 and A56 are also used as audio drivers in many of rockford's amps so it's a good part to keep in stock. |
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