need help ,how to removing transistor

[tomat]

All friends ,i need advice ,how to removing transistor which glutinous to the heatsink without damaging them .TO220 plastic transistor

thanks a lot for the help

[tomat]

i mean pulling up the glutinous transistor from heatsink without damaging them

advice pleaseee...

thanks

[Mooly]

Whats a glutinious transistor ? Do you mean the heatsink compound has "set" and gone hard. It can be like glue sometimes. If thats it just prise it off, and clean the old stuff off with alcohol or WD40. Use fresh compound and probably a new mounting kit (Washer/mica etc)
Picture of what you mean perhaps

[jaycee]

Pull it off with pliers, if it's just the regular compound

If it's been glued there with some kind of thermal epoxy, then its unlikely you will get it off without damage. A wood chisel at the meeting faces might remove it.

[tomat]

Originally posted by Mooly
Whats a glutinious transistor ? Do you mean the heatsink compound has "set" and gone hard. It can be like glue sometimes. If thats it just prise it off, and clean the old stuff off with alcohol or WD40. Use fresh compound and probably a new mounting kit (Washer/mica etc)
Picture of what you mean perhaps

,i'm sorry ,my english is bad .yes the heatsink compound getting hard.
but this afternoon i'm succes to pulling them up
thanks a lot for the advice

[tomat]

Originally posted by jaycee
Pull it off with pliers, if it's just the regular compound

If it's been glued there with some kind of thermal epoxy, then its unlikely you will get it off without damage. A wood chisel at the meeting faces might remove it.

thanks Mr Jaycee
i was succes pulling them this afternoon ,i'm using pliers but i spray them first with penetrant such philips lubricant & contact cleaner

once more thank you

[Mooly]

That's good then All sorted.