THM500: Difference between revisions

THM500 (view source)

5 bytes added , 21 March

m

typo

1,370

edits

Revision as of 00:58, 21 March 2025 (view source) Jaredcabot (talk \| contribs) (Added pictures) ← Older edit		Revision as of 01:13, 21 March 2025 (view source) Jaredcabot (talk \| contribs) m (typo) Newer edit →
Line 82:		Line 82:
	There was also a problem with loose banana jacks. When an instrument was returned to a service center, a special tool was used to hang a weight from the banana jack to check if it was too loose. If any banana jacks pulled loose, the rear case assembly (including jacks) was replaced with an updated part.		There was also a problem with loose banana jacks. When an instrument was returned to a service center, a special tool was used to hang a weight from the banana jack to check if it was too loose. If any banana jacks pulled loose, the rear case assembly (including jacks) was replaced with an updated part.

	These instruments MUST have all electrolytic capacitors replaced. They have a problem with leakage, and the main power supply filter capacitors cause the two ~~LTC1174~~ voltage regulator chips to fail due to excessive ripple and the current leakage paths across the PCB caused by the leaked electrolyte.		These instruments MUST have all electrolytic capacitors replaced. They have a problem with leakage, and the main power supply filter capacitors cause the two LTC1174HVIS8 voltage regulator chips to fail due to excessive ripple and the current leakage paths across the PCB caused by the leaked electrolyte.