Maintenance skills of M2150 BOSE and other radio / conference constant pressure amplifier |
| Time£º2015-06-16 09:26:40 Source£ºNetwork Author£ºUnknown Clicks£º1648 |
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J3zservice manual download site
For these users can sound, the sound seems to be the most important indicator. Chongqing Yalan electronic city are mostly sold in this type of product.J3zservice manual download site
Dr. M2150 BOSE fault phenomenon: power after the display normal, the output silent. No fever no smell. After the teardown inspection found that the input side of the power transformer normal power supply, signal processing circuit, a power amplification section does not output to the output transformer, this part is installed in an iron box, open the screw can see the boards, imported brands of machines like are double panel, maintenance tracking line to some trouble. Amplifier tube is used FET amplifier board has a few pieces of resistance burn, the Central Committee has a plug-in board is in in the power amplifier board, this chip is signal management is wearing parts, the bad parts replacement troubleshooting.J3zservice manual download site
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