dacflyer Messages: 17 Registered: July 2015 Location: Fayetteville NC
Junior Member
a friend of mine is wanting to buy a Kustom 300-5 but it has low output..
is this going to be worth buying or should i not take on another basket case ?
what could i be looking at that could be causing the low output ?
A general description of low output is hard to diagnose. The problem could be in the power amp or it could be in the summing circuit where all of the channels are mixed. It might be as simple as a bad coupling cap or could be a power supply problem or...
The fact that it turns on and works to some extent is always a good sign. At least your probably not looking at a fried board or a bad transformer.
stevem Messages: 4733 Registered: June 2004 Location: NY
Senior Member
If it is not distorting that would be a good sign that it does not have any major problems in the output section I would say.
Does the master volume work,and all of the six channels have the same low output?
Was the amp being played into the needed 4 ohm load, or was it higher?
If he' looking at the silver one listed on Ebay for $135.00 there's another one for $150 listed that is in working order I saw last night. Guitar Center also has one listed as well for the same money I think.
stevem Messages: 4733 Registered: June 2004 Location: NY
Senior Member
Most times its a poor connection due to tarnish on the aluminum pins and reciver's that make the connection.
Many times just removing and pluging the connectors in and out is enough to give the needed signal flow back for a year or so even with no cleaner spray used.
That all being said, over the years I have had 3 K250 heads with factory bad solder connections on the signal input connector on the power amp driver board.
dacflyer Messages: 17 Registered: July 2015 Location: Fayetteville NC
Junior Member
would it be a good idea to put some DE-OXIDIZER past on the pin connections ?
have seen this used on electrical connections before.
or would it be a better idea to replace the connectors and pins ?