Leonie Elrick Posted June 9, 2019 Share Posted June 9, 2019 I'll be giving this one a bath and hose down after the sale. If anyone interested, I'm up for a better idea. please approach me. Before you do, this is 30yrs of possums. On the top ladies and gentlemen. Link to comment Share on other sites More sharing options...
Guest Simonon Posted June 9, 2019 Share Posted June 9, 2019 I have restored some bad cases but that one is the worst I have seen. A good scrub with soapy water and rinse looks like the only answer. I would be careful soaking the mains transformer and remove it before soaking and look at an alternate way to clean it. The transformer windings will need to be checked for shorted turns and meggered for leakage to ground. After cleaning the unit I would place overnight in an oven at around 60 degrees to dry. Possum wee is highly corrosive and I would expect eaten copper tracks and component leads. Hopefully it has not penetrated the mains transformer or even the printed circuit boards. Good luck with that one. Link to comment Share on other sites More sharing options...
Leonie Elrick Posted June 9, 2019 Author Share Posted June 9, 2019 11 hours ago, Simonon said: I have restored some bad cases but that one is the worst I have seen. A good scrub with soapy water and rinse looks like the only answer. I would be careful soaking the mains transformer and remove it before soaking and look at an alternate way to clean it. The transformer windings will need to be checked for shorted turns and meggered for leakage to ground. After cleaning the unit I would place overnight in an oven at around 60 degrees to dry. Possum wee is highly corrosive and I would expect eaten copper tracks and component leads. Hopefully it has not penetrated the mains transformer or even the printed circuit boards. Good luck with that one. Thanks for the tips! I was going to use a hairdryer, but I like the oven idea. And I wouldn't have taken out the transformer. Link to comment Share on other sites More sharing options...
RonnieG Posted June 20, 2019 Share Posted June 20, 2019 . Wow, some job in hand, I would take out all the main units (amp, caps, boards, transformer and then probably scrub and wash with brush and use a blower, then the oven). If you can save the boards (not so much the components on it, except maybe a few) and the transformer, you can save this unit, hard to find a donor transformer and an equivalent toroidal does not fit in that small space. So take some small steps to clean, don't rush. also have handy some acetone to get that stubborn gunk off. Do not use water on the preamp connector board (the one with the pots on it). clean it manually with Deoxit D5 or acetone only. Have you fixed a 1200/1200B or a 240/250/250M before?. Link to comment Share on other sites More sharing options...
Leonie Elrick Posted June 26, 2019 Author Share Posted June 26, 2019 On 20/06/2019 at 9:06 PM, RonnieG said: . Wow, some job in hand, I would take out all the main units (amp, caps, boards, transformer and then probably scrub and wash with brush and use a blower, then the oven). If you can save the boards (not so much the components on it, except maybe a few) and the transformer, you can save this unit, hard to find a donor transformer and an equivalent toroidal does not fit in that small space. So take some small steps to clean, don't rush. also have handy some acetone to get that stubborn gunk off. Do not use water on the preamp connector board (the one with the pots on it). clean it manually with Deoxit D5 or acetone only. Have you fixed a 1200/1200B or a 240/250/250M before?. Ah no, I have a bit of a fear of electronics. Was badly electrocuted as a toddler. But I'm working on it! Mechanically minded though. 5 Link to comment Share on other sites More sharing options...
RonnieG Posted June 26, 2019 Share Posted June 26, 2019 Nice work. 1 1 Link to comment Share on other sites More sharing options...
Zap! Posted July 2, 2019 Share Posted July 2, 2019 Yes very nice work, but why not some new yellow chromating on the chassis and parts? Would have been nice but also rather cheap, at least it was last time I did it some twenty+ years ago. Well, a little late for that now, but maybe next time. :-) Best wishes from Sweden, the land of mooses. Zap 1 Link to comment Share on other sites More sharing options...
Batty Posted July 2, 2019 Share Posted July 2, 2019 Isn't Chromate carcinogenic ? Link to comment Share on other sites More sharing options...
bob_m_54 Posted July 3, 2019 Share Posted July 3, 2019 On 20/06/2019 at 11:06 PM, RonnieG said: . Wow, some job in hand, I would take out all the main units (amp, caps, boards, transformer and then probably scrub and wash with brush and use a blower, then the oven). If you can save the boards (not so much the components on it, except maybe a few) and the transformer, you can save this unit, hard to find a donor transformer and an equivalent toroidal does not fit in that small space. So take some small steps to clean, don't rush. also have handy some acetone to get that stubborn gunk off. Do not use water on the preamp connector board (the one with the pots on it). clean it manually with Deoxit D5 or acetone only. Have you fixed a 1200/1200B or a 240/250/250M before?. Did you mean Isopropyl Alcohol? Acetone is a bit too aggressive on a lot of plastics. Link to comment Share on other sites More sharing options...
RonnieG Posted July 3, 2019 Share Posted July 3, 2019 1 hour ago, bob_m_54 said: Did you mean Isopropyl Alcohol? Acetone is a bit too aggressive on a lot of plastics. On plastics yes, but not for the PCB boards. the recommendation to use acetone was only for the connector board, as using water with pots and the type of connectors used on that board is not recommended. That board is the weakest link in the unit and yes Isopropyl Alcohol will also do the job.. I also use acetone to take out that stubborn glue used in marantz units to hold capacitors in place., works well compared to any other methods i know of. 1 Link to comment Share on other sites More sharing options...
bob_m_54 Posted July 3, 2019 Share Posted July 3, 2019 Yes, unfortunately it can also remove component markings. Much safer to use Isopropyl. 1 Link to comment Share on other sites More sharing options...
RonnieG Posted July 3, 2019 Share Posted July 3, 2019 58 minutes ago, bob_m_54 said: Yes, unfortunately it can also remove component markings. Much safer to use Isopropyl. Yes agreed, but again there are no markings on that connector board, now you don't need Acetone everywhere, just enough in some areas. if one does not know, then yes play safe with Isopropyl alcohol and even that can remove some markings like the ones on the Marantz 16/18/19. Link to comment Share on other sites More sharing options...
Ahh- Schnoo Schnoo Posted July 3, 2019 Share Posted July 3, 2019 @Leonie Elrick Amazing how well the Marantz has come up with just a bit of love. Well done 1 Link to comment Share on other sites More sharing options...
Ahh- Schnoo Schnoo Posted July 3, 2019 Share Posted July 3, 2019 8 hours ago, Zap! said: Best wishes from Sweden, the land of mooses. Zap Don't know why Zap, but the land of mooses made me LOL. Greetings from Australia Link to comment Share on other sites More sharing options...
Zap! Posted July 3, 2019 Share Posted July 3, 2019 8 hours ago, Batty said: Isn't Chromate carcinogenic ? It surely is, but not for once and certainly not when someone (proffesional) else is doing it? I did not ment for someone to DIY. But this is cool. https://snowmobile.se/guldfinger-forzinka-hemma/ Link to comment Share on other sites More sharing options...
Zap! Posted July 3, 2019 Share Posted July 3, 2019 53 minutes ago, Ahh- Schnoo Schnoo said: Don't know why Zap, but the land of mooses made me LOL. Greetings from Australia That was my aim, Cheers! 3 1 Link to comment Share on other sites More sharing options...
Leonie Elrick Posted July 17, 2019 Author Share Posted July 17, 2019 It made that sweet click, with the smoke stopper, and no fluctuation in the globe either! So she's on the variac now 1 Link to comment Share on other sites More sharing options...
VA50 Posted July 17, 2019 Share Posted July 17, 2019 Can't believe how well she cleaned up. I bet it going to smell awful when it warms up though. Had possums in the roof of an old queenslander when i was a little kid. Never will forget how bad that stuff smells. Can only imagine what age and heat would do to it. Good work though! looks like you got the most of it out. Link to comment Share on other sites More sharing options...
Leonie Elrick Posted July 17, 2019 Author Share Posted July 17, 2019 I have sound! Squeaky, dirty sound! I honestly don't believe it Link to comment Share on other sites More sharing options...
Leonie Elrick Posted July 17, 2019 Author Share Posted July 17, 2019 14 hours ago, VA50 said: Can't believe how well she cleaned up. I bet it going to smell awful when it warms up though. Had possums in the roof of an old queenslander when i was a little kid. Never will forget how bad that stuff smells. Can only imagine what age and heat would do to it. Good work though! looks like you got the most of it out. I have to say I was a bit worried about the smell, especially in my oven, and I didn't want to have to do it again. So when I bathed it, I really bathed it! I gave it a good spray with a product from ecoworx. Then a couple of wash and rinses with pine-0-cleen floor cleaner. Only lingering smell as it warmed up was a hint of pomegranate blossom. 1 Link to comment Share on other sites More sharing options...
VA50 Posted July 18, 2019 Share Posted July 18, 2019 1 hour ago, Leonie Elrick said: I have to say I was a bit worried about the smell, especially in my oven, and I didn't want to have to do it again. So when I bathed it, I really bathed it! I gave it a good spray with a product from ecoworx. Then a couple of wash and rinses with pine-0-cleen floor cleaner. Only lingering smell as it warmed up was a hint of pomegranate blossom. Pomegranate blossom, a long way from marantz smell but a damn sight better then possum pee I spot a TA-xxx series sony on the shelf. vfet? or below the vfet series? looks a lot like my old TA-5650. Link to comment Share on other sites More sharing options...
Leonie Elrick Posted July 18, 2019 Author Share Posted July 18, 2019 46 minutes ago, VA50 said: Pomegranate blossom, a long way from marantz smell but a damn sight better then possum pee I spot a TA-xxx series sony on the shelf. vfet? or below the vfet series? looks a lot like my old TA-5650. TA3650, it's my workhorse, and does a great job Link to comment Share on other sites More sharing options...
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