Orion Colbalt 2100

[Exbass17]

so remove the transisitor and do the cont. diode check with the ohms setting or voltage setting on the meter?

 

[Perry Babin]

Check it as is shown on the basic transistor testing page (link in sig line) - section for FETs.

 

[Exbass17]

ok will do would you like me to check both 45N10 while im pulling the one?

 

[Exbass17]

both 45N10 passed all 3 test the one chip was questionable cause i noticed the reading started out at 3.47 but it was still hot from the solder iron i let it cool down and it start the reading off at 5.10 close to the other 45N10

 

[Exbass17]

is the chips i replaced maybe not compatible with the 45n10 chips? The P chips i replaced dont seem to be getting as how as the N chips id say half as hot as those however i wouldnt think any of them should be getting hot idling the power chips both rails cold and the right output rail is bone cold as well

 

[Exbass17]

Also i noticed both sides a few of the diodes are getting hot the chips on the board are is that normal since the Output transistors are getting hot?

 

[Perry Babin]

#84:
You're going to have to be very specific. This is technical and being vague is going to make is very difficult to help you.

What do you mean by 'one chip'?

3.47 what? volts, ohms..?

#85:
Don't refer to the transistors as chips.

The problem appears to be with one of the 45N10s because it had significant voltage across its source resistor while the others didn't. Did you read infinite resistance from leg 1 of the 45N10 to the other legs?

 

[Exbass17]

3.47 volts but the transistor was hot i could barely hold it however when it cooled down it started the voltage and stuck around 5.10 volts with the diode check i ran the 3 test how the site you showed me and everything seemed to be good with the other test they both matched up

 

[Perry Babin]

Was the transistor out of the board?

 

[Exbass17]

i took out both 45N10's that way i didnt have to remove both later plus its easier to compare them

 

[Exbass17]

I noticed the little bi polar transistors im not sure if there the driver transistors but some were hot and some of them were cool but most of them where on the side of the hot transistors you had me test there was couple that were hot tho on the good channel or is that normal since the 45n10 transistors are getting hot?

 

[Exbass17]

if you feel that the 45N10 transistors are bad i could always swap them with the good side and see if that fixxes the heat problem on that side if they begin heating up disconnect it right away to avoid more problems

 

[Exbass17]

I swapped out the 45N10's from the cool side transistors and replaced them with the 2 transistors that were getting hot inlined with the 2 IRFp9140pbf transistors you suggested i use they seem to be slightly warm but not burning my fingers like the others were the bi polar transistors are still getting hot and when i connect my laptop signal to the amp the transformer coil start trickling

 

[Exbass17]

also the transformer coil feels warm i dunno if thats normal

 

[Perry Babin]

Please use real words. Dunno isn't a word. Please use proper punctuation.

Please explain precisely where the probes were on the transistor when you read 5.1v on it with the meter on diode check.

 

[Exbass17]

_ _ - grd _ + = 5.10 volts / 5.25 Volts thats the volts I get on diode

check for transitor 1 and 2 that was hot each ( _ ) = pins from left to right
- and + = probe color

 

[Exbass17]

as for the ohms i am not getting any ohm readings through out both of the transistor either way i probe them on the pins with the diode check set to ohms when I switch the meter to diode check/ volts setting that is when I get the 5.10V # 1 transistor #2 transistor 5.25V on the meter

 

[Perry Babin]

Post a photo of the probes on the transistor and the meter display when reading 5.1v.

What do you mean by not getting any ohms reading? Do you mean that you are reading infinite resistance or are you reading 0 ohms? You need to take the time to write in a way that can be understood. This isn't a chat room. This is technical and requires precise language.

I have no clue what post #96 means.

 

[Exbass17]

The underscores are pins on the transistors from left to right and the voltage readings i got with the transistors i was having problems with. As for the when i have the ohms setting on the DMM diode check im getting OL when i do all the steps take to check the transistor on the Basic transistor testing for FET page you told me to look at

 

[Perry Babin]

You need to check with the meter set to ohms (highest range for non-autoranging meters) and diode check.