With SMD work, always clean the solder pad surfaces well before fixing the component to the board. If the tip of the iron is bigger than the component pre-glue the component with a pin prick of super glue on the plastic case underside, (don't get the glue on the soldering surface as it creates poisonous fumes if heated) and then put plenty of flux on the soldering area before soldering. Allow the surface tension of the solder to do the work, avoiding touching the component with the iron tip. Use solder paste if you find that easier to use than solder wire as it comes with the right amount of flux in it. Apply a thin string of solder paste and run the iron gently over it. You may have to wick off the excess. BTW @radiocruncher I think you did a great job on those caps!
Hi Ged some great tips there thanks. I have tried solder paste which works very well although I tend to put too much on and it’s a devil to get those tiny solder balls out from under components
I’ve been looking for an original Sony SW77 service manual for quite a while, your quite lucky getting one. I know they are expensive as my Kenwood TS2000 original service manual was around $58 plus shipping. I’m still looking.
@@Radiocruncher Many thanks for the offer. I have 2 Sony SW77 and one is recapped with Tantalum caps and the KMA (Chemi-Con?) caps but receive are still very quiet on AM/SSB. I suspect it could be the transistor Q316 is faulty (I believe the one you were doing was cracked). Thanks for the good videos. Steve. 2E0FQB.
Hello Sir, can you tell me where i can purchase a set of tantalum capacitors for this Sony radio? I can't find any UK sellers.You've inspired me to try and repair my Sony ICF-SW77. Many thanks.
Hi. There is a seller in the US on Ebay called Adel that sells kits. I can put one together for you if get stuck. Drop me an email to graham@radiocruncher.com
Hi, sir - Just wondering, do you have the full part numbers for those "A64" and "RF2312" smd ics? (And I guess Transistor Q316) - I recapped both of my SW77s last summer and they now both perform differently and badly. So I'm going to have another go at it here, but like you, I lifted pads even at low temperature. (I used jumper wire to repair, unfortunately. May try with copper sheeting+epoxy this time around.) Finding the part numbers is tough as ever, and so is any alignment procedure. (Also, liked and subscribed, didn't know you existed. May be helpful in the future!)
Hi Michi. Most of the issues with these after capacitor replacement is corrosion on the board through the vias. The more badly corroded the capacitors are the worse it is. You need to go over the board and check all the vias are still connected in the areas where it was corroded. Jumper wires should work fine as long as they are making good contact. Another issue I have found is the small trimmer capacitors. They can corrode and also isopropyl and flux can get in them and cause damage. You will need the service manual to try down and identify the parts you want to replace. If you can let me know where they are on the board then I may be able to help. If you get stuck then my email is graham@radiocruncher.com. I’m also on Twitter, Facebook, instagram etc.
Hello. Nice video. Maybe you have full list of capacitors needed (uf and voltage)?
Hi, just checking. The flat line on a Tantalum cap is the positive. And on electrolytic caps the flat line is the negative.
Yes Andy that’s correct
With SMD work, always clean the solder pad surfaces well before fixing the component to the board. If the tip of the iron is bigger than the component pre-glue the component with a pin prick of super glue on the plastic case underside, (don't get the glue on the soldering surface as it creates poisonous fumes if heated) and then put plenty of flux on the soldering area before soldering. Allow the surface tension of the solder to do the work, avoiding touching the component with the iron tip. Use solder paste if you find that easier to use than solder wire as it comes with the right amount of flux in it. Apply a thin string of solder paste and run the iron gently over it. You may have to wick off the excess. BTW @radiocruncher I think you did a great job on those caps!
Hi Ged some great tips there thanks. I have tried solder paste which works very well although I tend to put too much on and it’s a devil to get those tiny solder balls out from under components
I’ve been looking for an original Sony SW77 service manual for quite a while, your quite lucky getting one. I know they are expensive as my Kenwood TS2000 original service manual was around $58 plus shipping. I’m still looking.
If there are any pages you need a high res scan for then let me know but it’s great to have the original
@@Radiocruncher Many thanks for the offer. I have 2 Sony SW77 and one is recapped with Tantalum caps and the KMA (Chemi-Con?) caps but receive are still very quiet on AM/SSB. I suspect it could be the transistor Q316 is faulty (I believe the one you were doing was cracked). Thanks for the good videos. Steve. 2E0FQB.
Hello Sir, can you tell me where i can purchase a set of tantalum capacitors for this Sony radio? I can't find any UK sellers.You've inspired me to try and repair my Sony ICF-SW77. Many thanks.
Hi. There is a seller in the US on Ebay called Adel that sells kits. I can put one together for you if get stuck. Drop me an email to graham@radiocruncher.com
Hi, sir - Just wondering, do you have the full part numbers for those "A64" and "RF2312" smd ics? (And I guess Transistor Q316) - I recapped both of my SW77s last summer and they now both perform differently and badly. So I'm going to have another go at it here, but like you, I lifted pads even at low temperature. (I used jumper wire to repair, unfortunately. May try with copper sheeting+epoxy this time around.) Finding the part numbers is tough as ever, and so is any alignment procedure. (Also, liked and subscribed, didn't know you existed. May be helpful in the future!)
Hi Michi. Most of the issues with these after capacitor replacement is corrosion on the board through the vias. The more badly corroded the capacitors are the worse it is. You need to go over the board and check all the vias are still connected in the areas where it was corroded. Jumper wires should work fine as long as they are making good contact. Another issue I have found is the small trimmer capacitors. They can corrode and also isopropyl and flux can get in them and cause damage. You will need the service manual to try down and identify the parts you want to replace. If you can let me know where they are on the board then I may be able to help. If you get stuck then my email is graham@radiocruncher.com. I’m also on Twitter, Facebook, instagram etc.
Hello dear engineer ,sony icf sw77 repair very nice demo and I have a radio sony icf sw77 but no working battery site ac site ok. plz advice .
Hi Jaynal. The capacitors will need replacing which should sort it out for you