Should I power this thing up?(I HAVE NO VARIAC)

[TechGeek]

Re: Should I power this thing up?(I HAVE NO VARIAC)

So, I have a good set that's starting to get moderately unavailable?

[goontron]

Re: Should I power this thing up?(I HAVE NO VARIAC)

If you feel lucky. I've done it plenty of times with 40-50+ year old receivers/radios (just plugged them in an hit the switch), but there is always the possibility it could go bang and/or release the magic blue smoke.

Looks like RS-1056s are going for between $50-175 on eBay depending on condition, so it has some value, but isn't exceptionally valuable (probably about average for a quality 90WPC receiver from that time period), so there isn't a ton of risk in doing this. (If you want your head to explode look at what Marantz 2270/2275s are selling for, a good one with a wood case can sell for $1k+ and even non working they can go for $300+)

The Marantz 2325 is going for $1,175.00, i don't get why. These fuckers are deaf! They can't pick up a 1 watt FM transmitter next to the bloody antenna! Yet a yamaha CR640 has no problem picking it up from across the room! Marantz garbage!

[TechGeek]

Re: Should I power this thing up?(I HAVE NO VARIAC)

I did a quick Google search and found nothing but mainly eBay ads. Looking on eBay for it turns up about nothing, so maybe either everyone's keeping theirs or these sets are becoming all but common.

[dmill89]

Re: Should I power this thing up?(I HAVE NO VARIAC)

Could I just plug it straight into the wall(no ballasting/full line voltage)?

If you feel lucky. I've done it plenty of times with 40-50+ year old receivers/radios (just plugged them in an hit the switch), but there is always the possibility it could go bang and/or release the magic blue smoke.

Looks like RS-1056s are going for between $50-175 on eBay depending on condition, so it has some value, but isn't exceptionally valuable (probably about average for a quality 90WPC receiver from that time period), so there isn't a ton of risk in doing this. (If you want your head to explode look at what Marantz 2270/2275s are selling for, a good one with a wood case can sell for $1k+ and even non working they can go for $300+)

[TechGeek]

Re: Should I power this thing up?(I HAVE NO VARIAC)

Higher wattage, less resistance. So put in the 60W and good is.

I just would do a visual check over, check the bridge rectifier and the output diodes on the PSU. Other than that, turn it on and see what happens. I had a pre driver fail after the unit ran for 3 minutes. So who knows. Don't be shy. When you turn it on, make sure to measure if you find DC on the speaker outputs. Not sure if this thing has protection (relay click) or not.

Why do I need to check for DC on the speaker outputs? And how much DC?

[TechGeek]

Re: Should I power this thing up?(I HAVE NO VARIAC)

Could I just plug it straight into the wall(no ballasting/full line voltage)?

[ReeceyBurger123]

Re: Should I power this thing up?(I HAVE NO VARIAC)

I said 100 as there would hopefully be more of a drop on the input hopefully help as much as possible just to get the caps energised a little. Also yeah 60 should be fine though if you only have em on hand see what it does, never know it might work

However the caps will need to be changed in good time as they are old.

[CapLeaker]

Re: Should I power this thing up?(I HAVE NO VARIAC)

Higher wattage, less resistance. So put in the 60W and good is.

I just would do a visual check over, check the bridge rectifier and the output diodes on the PSU. Other than that, turn it on and see what happens. I had a pre driver fail after the unit ran for 3 minutes. So who knows. Don't be shy. When you turn it on, make sure to measure if you find DC on the speaker outputs. Not sure if this thing has protection (relay click) or not.

[TechGeek]

Re: Should I power this thing up?(I HAVE NO VARIAC)

more wattage=more current limiting capacity? I could series-string 2 60 watt bulbs for 120 watt load. Where would I hook up the load? In series with the bulbs?

image:

[ReeceyBurger123]

Re: Should I power this thing up?(I HAVE NO VARIAC)

Be brave it can only go bang right

Probably needs few parts replacing too, maybe use like a 100w light bulb in series with the Ac input to limit current ?

[TechGeek]

Hi all. Yesterday, I got a load of old electronics and all but this Fisher RS-1056 work. The stereo receiver is very dirty and a dirt dobber was found in it, along with some other bugs, and it appears to be from the 70s. Here, let me attach some photos:





I have no variac, so no slow controlled powerup, and I also do not have an ammeter, so no way to measure current draw. It has no blown fuses, and I just want to see this thing work. SOME caps are of Japanese orgins, but there are these unknown quality 'SHOEI' caps. There are no blown and/or bulging caps.

Also, I am wondering how rare this particular unit is. Please help. Thanks.