technical manual for sailor compact hf ssb t2130 - Gopher Proxy
technical manual for sailor compact hf ssb t2130 - Gopher Proxy
technical manual for sailor compact hf ssb t2130 - Gopher Proxy
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3 SERVICE T2130<br />
3.4.4 POWER SUPPLY (MODULE 4)<br />
3.4.4.1<br />
If all output supplies are missing, check the main fuses F02 and F03 (20A) located on the Connection<br />
Board (6).<br />
3.4.4.2<br />
If only the +18V, -18V, +9V are missing the fault is in the switch mode power supply.<br />
3.4.4.3<br />
Check the voltage on U01 pin 13, 12V (heatsink as common).<br />
3.4.4.4<br />
If zero voltage, check fuse F01 (3.15A) on the Connection Board (6).<br />
3.4.4.5<br />
If it is ok, disconnect the gate and source on switching Fet’s on Q02 and Q03.<br />
3.4.4.6<br />
Then check the wave<strong>for</strong>ms on U01 pin 11 and 12, see below.<br />
3.4.4.7<br />
If not ok, then the fault is in U01.<br />
3.4.4.8<br />
If ok, then reconnect the gate and source and check the wave<strong>for</strong>ms on U01 pin 11/12, see below.<br />
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