Trim pots

[calman46]

How critical is to used the factory values on the trim pots for DC offset and idle current ? Like subbing a 2k for the original 2.2k on bias and a 1k for the 680 on DC offset . I have recapped some Mitsubishi DA A10DC amps and would like to put in so sealed trimpots. Mouser an Digi Key have a limited selection now. As a general rule can you go to the next value ? either up or down in value ? I have one more question , if wiper contact is lost does the circuit" see " the trim pot value ? Thanks

 

[8991XJ]

Use what is close and a bit wider in case you need to be at the high end. Your adjustment is going to generally be in the mid-range of the original and using a different value as long as you can set it to the correct value the new pot could be lower.