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Hi guys,

Sorry for not updating you sooner. I managed to fix and sell the radio. It did quite well once everything was fixed up. Here is a picture of how I managed to resurface the transistors.

First off we have how they started off. You can see the bow in the transistor.

[ATTACH=full]25531[/ATTACH]

Then we have the first bit of progress and you can see the low spot.

[ATTACH=full]25532[/ATTACH]

Progress

[ATTACH=full]25533[/ATTACH]

Finished sanding

[ATTACH=full]25534[/ATTACH]

And finally got them to a mirror finish with polish

[ATTACH=full]25535[/ATTACH]

Throughout the process I had a sheet of sand paper glued to a flat surface. First started sanding with coarse grit then with fine grit. Even though I tried holding the transistor flat onto the surface when sanding, the edges of the transistor were coming out rounded. Basically when you hand sand it as much as you may try the transistor leans in a little towards the direction you're sanding and this rounds off the edges. It could have gotten so bad as to basically ending up with a mirror of the previous deformation, a U shape but this time pointing towards the transistor's top casing. The jig I built helped eliminate this issue by stabilizing the transistor and any rounding took place on the edges of the clad board and not the transistor. Finally because the transistor was bent down the tops of the screw holes had to be made flat too as they were leaning outward, I did this with a dremel cut off wheel and came out pretty good. Banging them flat can lead to cracking the casing so this is the better method.

<blockquote data-quote="Tolteca" data-source="post: 641141" data-attributes="member: 52008">Hi guys,Sorry for not updating you sooner.&nbsp; I managed to fix and sell the radio.&nbsp; It did quite well once everything was fixed up.&nbsp; Here is a picture of how I managed to resurface the transistors.First off we have how they started off.&nbsp; You can see the bow in the transistor.[ATTACH=full]25531[/ATTACH]Then we have the first bit of progress and you can see the low spot.[ATTACH=full]25532[/ATTACH]Progress[ATTACH=full]25533[/ATTACH]Finished sanding[ATTACH=full]25534[/ATTACH]And finally got them to a mirror finish with polish[ATTACH=full]25535[/ATTACH]Throughout the process I had a sheet of sand paper glued to a flat surface. First started sanding with coarse grit then with fine grit.&nbsp; Even though I tried holding the transistor flat onto the surface when sanding, the edges of the transistor were coming out rounded. Basically when you hand sand it as much as you may try the transistor leans in a little towards the direction you&#039;re sanding and this rounds off the edges.&nbsp; It could have gotten so bad as to basically ending up with a mirror of the previous deformation, a U shape but this time pointing towards the transistor&#039;s top casing. The jig I built helped eliminate this issue by stabilizing the transistor and any rounding took place on the edges of the clad board and not the transistor.&nbsp; Finally because the transistor was bent down the tops of the screw holes had to be made flat too as they were leaning outward, I did this with a dremel cut off wheel and came out pretty good.&nbsp; Banging them flat can lead to cracking the casing so this is the better method.</blockquote>

[QUOTE="Tolteca, post: 641141, member: 52008"] Hi guys, Sorry for not updating you sooner. I managed to fix and sell the radio. It did quite well once everything was fixed up. Here is a picture of how I managed to resurface the transistors. First off we have how they started off. You can see the bow in the transistor. [ATTACH=full]25531[/ATTACH] Then we have the first bit of progress and you can see the low spot. [ATTACH=full]25532[/ATTACH] Progress [ATTACH=full]25533[/ATTACH] Finished sanding [ATTACH=full]25534[/ATTACH] And finally got them to a mirror finish with polish [ATTACH=full]25535[/ATTACH] Throughout the process I had a sheet of sand paper glued to a flat surface. First started sanding with coarse grit then with fine grit. Even though I tried holding the transistor flat onto the surface when sanding, the edges of the transistor were coming out rounded. Basically when you hand sand it as much as you may try the transistor leans in a little towards the direction you're sanding and this rounds off the edges. It could have gotten so bad as to basically ending up with a mirror of the previous deformation, a U shape but this time pointing towards the transistor's top casing. The jig I built helped eliminate this issue by stabilizing the transistor and any rounding took place on the edges of the clad board and not the transistor. Finally because the transistor was bent down the tops of the screw holes had to be made flat too as they were leaning outward, I did this with a dremel cut off wheel and came out pretty good. Banging them flat can lead to cracking the casing so this is the better method. [/QUOTE]

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