ps1 low sound

No, a PS1 typical reset chip only solves the reset problem of 3 clanks and not running.

You have a different problem- thus you need an entirely different solution.  Let's check the manual https://mthtrains.com/sites/de...ction/10dl15713i.pdf

page 15 tells us something important- there is BOTH a digital programmed sound volume- and the physical volume potentiometer.

PROTOSOUND® VOLUME ADJUSTMENT
Your ProtoSound® system has two types of volume adjustment. A
manual turn knob on the bottom of the chassis (See Fig. 5 below) allows
you to control all the sounds in the system and a remote control “RESET"
option (Option # 6), allows you to control the volume level of the engine
sounds remotely from the transformer. Turning the volume adjustment
knob clockwise will increase the volume and counterclockwise will lower
the volume of all sounds; bell, horn, engine sounds, Cab Chatter, etc. For
information on operating the RESET volume adjustment option, see the
section entitled “Programming ProtoSound RESET Options” on the
following pages.

Page 17 goes further:

SETTING THE ENGINE VOLUME
Of all the sounds that come with each ProtoSound-equipped locomotive,
the one most often turned down is that of the engine volume because it is
the one sound normally heard whenever the engine is running and is what
usually can become tiresome to the ear over prolonged running sessions.
The volume adjustment is controlled through RESET Feature 6.
To access the feature, advance the transformer throttle to put the engine in
RESET. Move the throttle up and down, as described on page 5, 6 times.
After you hear the “clank" and “clink" indicating that you are in Feature 6,
press the whistle button to select the engine volume level you desire.
Pushing the whistle button once will give you full volume, which is the
factory setting. Pushing the whistle button a second time will give you 50%
volume, pushing it a third time will give you 25% volume and pushing it a
fourth time will give you no sound. The microprocessor will immediately
play the sound level each time the whistle button is pushed so that you can
decide if it is acceptable. You can recycle through the four choices by
simply continuing to
press the whistle button.
Once you have decided
on the appropriate
volume level, turn the
transformer throttle off
and on again or press
the transformer direction switch to lock in your selection. The volume
adjustment will remain set at the level you have chosen until you change it
again. Regardless of the engine volume setting, the horn, bell, compressor
and Cab Chatter sounds will function normally. In fact because only the
engine volume is affected by selections in Feature 6, when you select 0
volume, you can still hear the horn, bell and Cab Chatter sounds when the
engine is running or in neutral

Do the factory reset 18.  Make sure plug from volume pot installed correctly, have 8 ohm speaker not 16 ohm.  G

thanks for all the help ,did the reset 18 and back in business,t