zenith: Ch= 500MDR70; Trans-Oceanic Royal D7000

Hello all......I need guidance in repair of chart and dial lights. They are not working, and the bulbs are good. I am having trouble finding them in schematic. There must be a common part that is disabling. I am not getting voltage on pins that attach to chart light.  All help appreciated...Thanks  AL  

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Hello Alfred,

see here and observ, there ist a switch on/off

knoll

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Hi all....Happy New Year!  For everyones info....The dial and chart lights do not work without the batteries inserted! So even when AC is working....the radio needs batteries to work lights.....AL 

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hello. you need one d-cell installed in order for the dial and map lights to work. there's a place in the back for a single d-cell, and that's where it goes. i hope this clears up your problem...

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...those front panel slide switches in these are known to develop contact oxidation over time.  I had that same issue with the D7000Y I just got last month (I knew about it before I bought it; the eBay seller had said in his description that the lights and battery indicator weren't working), but noticed that if I worked the switch back and forth a few times, the dial lights would blink momentarily and the meter would jump.  A little De-Ox-It in the dial light/battery meter switch got them working properly...so I proceeded to put some into all the switches and controls.  It would not be a bad idea to use some of that or a similar contact cleaner on those switches (it will be necessary to pull the chassis to do it), and it may even get your lights working as well.  If not, I believe those are #123 bulbs.

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Dear Hans!

 Now I have such a device can only get it at the end of the month.

Javaslat jobb fordításra

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Hello  Sandor.

I dont own such Model. ROYAL 7000.  I have only a Book from ZENITH Radios.

Attached you can find a Scann fom this book. There you can read, the Powersuply for AC is mounted inside the rear Cover.

Mr. Birkner, maybe can say more to this model?

regards, hans

• Text from ZENITH Book (119 KB)

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There is receptacle for a special mains plug. To insert it, a slider must be pushed aside which simultaneously changes the mode from battery to mains operation.  see attached pictures.

• US_Zenith_Royal7000_back_1 (74 KB)
• US_Zenith_Royal7000_back_2 (57 KB)
• US_Zenith_Royal7000_mains_i (21 KB)
• US_Zenith_Royal7000_outer_l (52 KB)
• US_Zenith_Royal7000_power_i (84 KB)

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