TTB-9-2920-225-34-1 Regulator Check Out and Repair 100 Amp 2920-00-900-7993 Download
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TB 9-2920-225-34-1 Table 2-7. Substitutes for transistor Q5–.Model O4 2-18 Figure 2-13. Relay location-model 04. Table 2-7. Substitutes for transistor Q5–Model 04— continued If the regulator still does not function correctly it will be necessary, if local skills permit, to test each component. All the parts should be checked with an ohmmeter and the capacitors checked with a capacitance meter. The circuit board traces should rechecked with an ohmmeter to make sure that there are no cracked traces. Traces with hair- line cracks will show good at lower temperatures and will tend to show open circuit at higher tem- peratures. If the board seems good at room tem- perature, but the regulator still fails, this could be the cause.